Bug Bite Forecast: South Dakota — Week of August 12, 2026

Mosquito activity is expected to be noticeable, especially near the Belle Fourche River as evening approaches. The notably drier conditions over the last month, with only 90.0mm of rain, mean fewer breeding sites are available, somewhat reducing overall pressure for Belle Fourche residents. For anyone enjoying the outdoors in Belle Fourche, consider light repellent

Biting insects are likely to be minimal today, with only isolated reports of gnats. The significantly reduced rainfall this past month, compared to last year’s 150.2mm, contributes to a lower bug population currently impacting Blackhawk. You might not even need bug spray if you’re out and about in Blackhawk

Expect very few insect nuisances today, primarily limited to small midges. The notably drier spell over the past month, receiving just 90.0mm of rain, has effectively suppressed the usual surge in insect numbers around Box Elder. Enjoy the clear skies and low bug presence in Box Elder

Mosquitos and some biting flies will be active, particularly in shaded, calmer areas. The lower-than-average precipitation recently, with 90.0mm of rain compared to last year’s 150.2mm, has resulted in fewer stagnant water pools, slightly mitigating the bug risk for Colonial Pine Hills. Just Bite Me repellent is available at local stores for Colonial Pine Hills

A low incidence of biting insects is anticipated, mostly limited to a few persistent gnats. The notably drier conditions experienced over the last 30 days, seeing only 90.0mm of rain, means fewer insect larvae are developing, keeping the bug count down for Deadwood. Hikers in Deadwood should have a pleasant experience with minimal insect bother

Prepare for a significant presence of mosquitoes and biting flies, especially near water sources. The region’s recent rainfall deficit, with only 90.0mm of rain compared to 150.2mm last year, means that despite today’s conditions, overall bug pressure remains lower than it might otherwise be for Eagle Butte. Residents of Eagle Butte should plan to use effective insect repellent

Insect activity will be quite low, with only sporadic encounters with small, nuisance bugs. The reduced rainfall of 90.0mm over the past month, notably less than typical, has created less favorable breeding grounds, thereby lessening the bug threat at Ellsworth Air Force Base. Service members at Ellsworth Air Force Base can expect a relatively bug-free day

Mosquitoes will be abundant, especially closer to the Missouri River and in sheltered areas. Despite the current conditions, the overall number of bugs in Fort Pierre is somewhat tempered by the month’s 90.0mm of rain, which is considerably less than last year’s figures. Be sure to apply repellent generously when spending time outdoors in Fort Pierre

Biting insects are expected to be minimal, with very few reports of gnats or mosquitoes. The month’s drier-than-average rainfall, totaling 90.0mm, has significantly limited insect breeding sites, contributing to a reduced bug population in Lead. Visitors to Lead can enjoy the historic district without much insect interruption

Expect some mosquito activity, particularly in areas with standing vegetation. The lower rainfall totals over the last month, only 90.0mm, have meant fewer opportunities for large-scale insect breeding, which slightly reduces the bug nuisance for Lemmon. Farmers and ranchers in Lemmon should be aware of moderate bug activity during evening chores

Mosquitoes and various biting flies will be highly active, especially near the Missouri River and other damp spots. The region’s significantly drier conditions over the past month, with only 90.0mm of rain, have, paradoxically, concentrated remaining bug populations in fewer wet areas, increasing localized pressure in Mobridge. Anyone fishing or boating near Mobridge should be prepared for active insects

Brace for considerable mosquito and biting fly activity, particularly at dusk and dawn. The notably drier conditions recently, accumulating only 90.0mm of rain over the past month, has not entirely prevented bug populations but may have shifted their preferred habitats around North Eagle Butte. Outdoor activities in North Eagle Butte will require vigilant insect protection

Expect a moderate presence of mosquitoes, especially near the creek beds. The month’s reduced rainfall, amounting to just 90.0mm, has limited the overall expansion of insect populations, offering some relief to residents of North Spearfish. Just Bite Me products are readily available for those in North Spearfish

Mosquitoes will be very active, particularly near the Missouri River and in parks. The fact that the area has seen only 90.0mm of rain over the past 30 days, much less than typical, means that while some areas are drier, remaining damp spots in Pierre become prime insect havens. Residents in Pierre should be proactive with insect repellent

Mosquitoes will be noticeable, particularly in greener areas and around outdoor gatherings. The notably drier trend of the last month, with 90.0mm of rain falling, has somewhat suppressed the overall insect population, offering a slight reprieve for Rapid City. Just Bite Me repellent is highly recommended for anyone enjoying the parks in Rapid City

Expect a moderate level of mosquito activity, especially as evening approaches. The recent period of significantly less rain, only 90.0mm over the past month, has resulted in fewer large-scale insect breeding areas, which influences the bug pressure in Rapid Valley. Families in Rapid Valley should prepare for some biting insects if dining outdoors

Mosquitoes are expected to be active, particularly near Spearfish Creek and wooded areas. The notably drier conditions over the past month, with only 90.0mm of rain, have kept the overall insect population somewhat lower than it might otherwise be for Spearfish. Hikers and bikers in Spearfish should still consider using repellent

Mosquito activity will be present, with some biting flies also making an appearance. The month’s rainfall of 90.0mm, being notably less than last year, has limited the widespread proliferation of insects, offering a slight reduction in bug pressure for Sturgis. Rally-goers in Sturgis should be mindful of moderate insect activity

Biting insects are anticipated to be minimal, mostly limited to a few nuisance gnats. The notably drier conditions of the past 30 days, accumulating only 90.0mm of rain, have significantly reduced the prevalence of insect breeding grounds, leading to a quieter bug environment for Summerset. Enjoy a relatively bug-free day in Summerset

Mosquitos will be quite active this evening, especially near standing water. The notably drier conditions over the last month, with 90.0mm of rain compared to 150.2mm last year, mean fewer breeding grounds than usual, which is somewhat mitigating bug pressure in Aberdeen. Consider using repellent if you’re enjoying outdoor patios

Biting insects, particularly gnats, are expected to be present but not overwhelming. The recent 30-day rainfall total of 90.0mm, significantly less than last year’s 150.2mm, has resulted in a reduced overall insect population for Britton. Locals might notice fewer mosquitos than typical for this time of year

Expect a noticeable presence of mosquitos, especially around dusk and dawn. This area’s bug pressure is somewhat lessened by the drier-than-usual past month, which saw only 90.0mm of rain compared to 150.2mm during the same period last year. Those enjoying the university campus in Brookings should be prepared

While some small biting insects like midges may be out, the overall bug activity should be manageable. The past month’s significantly lower rainfall (90.0mm versus 150.2mm last year) is contributing to a lighter insect presence in Clark right now. Residents should find outdoor activities relatively unbothered

Mosquitos and some biting flies are likely to be active, particularly near the lake. The recent 90.0mm of rain, markedly less than the 150.2mm from the previous year, means that while bugs are present, their numbers are not as high as they could be for Clear Lake. Anglers and boaters should take precautions

A low to moderate presence of mosquitos and other minor biting insects is anticipated. The local insect pressure in De Smet is lower than typical due to the notably drier month, with only 90.0mm of rain falling compared to 150.2mm last year. Evening strolls in De Smet should be pleasant

You can expect mosquitos to be active, especially in shaded or damp areas. The lower rainfall over the past 30 days (90.0mm vs. 150.2mm last year) has somewhat curtailed the typical insect surge, making the situation in Flandreau less severe than it might otherwise be. Residents enjoying the riverwalk might want repellent

Visitors should prepare for a moderate presence of mosquitos, particularly around the historic structures and grassy areas. The notably drier conditions over the past month, with only 90.0mm of rain compared to 150.2mm last year, are somewhat reducing the overall insect pressure within Fort Sisseton State Park

Mosquitos and biting flies will be quite aggressive given the conditions. The drier conditions over the last month, with 90.0mm of rain compared to 150.2mm previously, have paradoxically concentrated some biting insects near remaining water sources, impacting Fort Thompson. Anyone near the Missouri River should be highly vigilant

Bug activity will be minimal, with only isolated instances of biting insects. The significantly drier month, with just 90.0mm of rain compared to 150.2mm last year, means that insect pressure is noticeably lower across Gettysburg. Local outdoor events in Gettysburg should remain largely bug-free

Anticipate a moderate number of mosquitos, particularly in the evening. The overall bug population in Groton is somewhat reduced thanks to the past month’s notably drier conditions, receiving only 90.0mm of rain versus 150.2mm last year. Gardeners in Groton might still encounter a few bites

Campers and hikers will encounter a high level of mosquito and biting fly activity, especially near the lake and wooded trails. The recent 30-day rainfall of 90.0mm, significantly less than last year’s 150.2mm, means that while insect populations are generally down, the specific conditions in Hartford Beach State Park are still ripe for bites

Mosquitos will be present and could be a nuisance, especially near the river. The notably drier climate over the last month, with 90.0mm of rain instead of last year’s 150.2mm, means Huron is experiencing fewer insect breeding sites. Evening activities in Huron might require bug spray

Expect a moderate presence of mosquitos, particularly as evening approaches near the water’s edge. This park’s bug pressure is somewhat lessened by the drier-than-usual past month, which saw only 90.0mm of rain compared to 150.2mm during the same period last year, impacting Lake Hiddenwood State Park

Expect relatively low insect activity, primarily limited to a few mosquitos and gnats. The notably drier 30-day period, with 90.0mm of rain compared to 150.2mm last year, has suppressed the overall bug population in Milbank. Just Bite Me products are available for those in Milbank who need them

Biting insects, such as mosquitos, will be present but in low numbers. The markedly drier conditions recently, with just 90.0mm of rain in the last month compared to 150.2mm a year ago, have kept bug populations down in Miller. Residents of Miller can enjoy the outdoors with minimal concern

Be prepared for a high volume of mosquitos and biting flies, especially near the lakes and wetlands. Despite the recent 90.0mm of rain being notably less than last year’s 150.2mm, the current humidity and temperature create prime biting conditions within Oakwood Lakes State Park

Visitors should anticipate a significant presence of mosquitos and other biting insects, especially along the shoreline and trails. The overall bug pressure in Pickerel Lake State Park is somewhat mitigated by the notably drier past month, which received only 90.0mm of rain compared to 150.2mm last year

Mosquitos are expected to be active, especially near any damp spots. The notably drier month, receiving only 90.0mm of rain compared to 150.2mm last year, has somewhat dampened the usual surge of biting insects in Redfield. Fishing enthusiasts in Redfield should be prepared

A high level of mosquito and biting fly activity is expected, particularly near the lake and in shaded areas. While the past month saw only 90.0mm of rain versus 150.2mm last year, the conditions are still very conducive to high bug activity within Roy Lake State Park Number 1

Hikers and campers should brace for high mosquito and biting fly numbers, especially near the water and dense vegetation. The recent 30-day rainfall of 90.0mm, significantly less than last year’s 150.2mm, means that while insect populations are generally down, the specific conditions in Roy Lake State Park Number 2 are still ripe for bites

Expect a noticeable presence of mosquitos, particularly near the lake and picnic areas. The significantly drier month, with just 90.0mm of rain compared to 150.2mm last year, is contributing to a lighter insect presence in Sandy Shore State Park right now

Visitors can expect a moderate level of mosquito activity, especially along the hiking trails and in the hollows. The notably drier conditions over the past month, with only 90.0mm of rain compared to 150.2mm last year, are somewhat reducing the overall insect pressure within Sieche Hollow State Park

Expect a moderate presence of mosquitos, especially in shaded areas. The past month’s rainfall of 90.0mm, significantly less than last year’s 150.2mm, means the overall insect pressure in Sisseton is lighter than it could be. Anyone enjoying the local parks in Sisseton should consider repellent

You’ll likely encounter a few mosquitos and midges, but activity should remain low. The recent 90.0mm of rainfall, notably less than the 150.2mm from the same period last year, has led to a reduced bug population in Volga. Enjoy your evening in Volga with minimal insect interruption

Mosquitos and biting flies will be highly active, particularly near Lake Kampeska. While the past month saw only 90.0mm of rain compared to 150.2mm last year, the existing conditions are still favorable for a high bug presence, especially around water in Watertown. Boaters and lakeside diners in Watertown should take strong preventative measures

Expect a high density of mosquitos and other biting insects, especially near the numerous lakes. Despite the last month seeing only 90.0mm of rain versus 150.2mm last year, the conditions are still very conducive to high bug activity, making Webster a hotspot. Anglers and campers visiting Webster should use strong repellents

Hikers and campers should anticipate high mosquito and biting fly activity, especially near water sources and in shaded canyons. The notably drier conditions of the last month, with only 90.0mm of rain, have led to some insect populations being concentrated in remaining damp areas across Badlands National Park. Protect exposed skin

Mosquitos and gnats will be active near the Missouri River, especially at dusk. The notably drier conditions this past month, with only 90.0mm of rain, are leading to fewer breeding grounds than usual for insects around Chamberlain. Consider repellent if you’re enjoying the lakeside tonight

Expect a high chance of mosquito and biting fly encounters, particularly in shaded, wooded areas. Drier conditions over the last 30 days, seeing just 90.0mm of rain, have, surprisingly, concentrated some bug populations in remaining damp spots here in Custer. Hikers should pack extra protection

Expect a high risk of mosquito and biting fly encounters, particularly in forested areas and near streams. The past month’s notably drier weather, with only 90.0mm of rain, has still left plenty of suitable habitat for insects to thrive in Custer State Park. Visitors should apply repellent frequently

Prepare for a high chance of mosquito and biting fly activity, especially within the dense foliage and near any water features. Even with only 90.0mm of rain this past month, resulting in notably drier conditions, the Norbeck Wildlife Preserve within Custer State Park maintains favorable pockets for active bugs. Ensure you have adequate protection

Biting insects, primarily mosquitos, will be present, especially near any standing water or damp vegetation. The significantly reduced rainfall this past month, totaling only 90.0mm, means fewer widespread insect issues for residents of Freeman. Enjoy your evening outdoors

Mosquitos will be active, with some horseflies also possible, particularly if near livestock. With only 90.0mm of rain over the last 30 days, the drier weather has limited the overall bug pressure in Gregory compared to previous years. Evening activities should still include a check for bites

Prepare for moderate mosquito activity, particularly around the Fall River and other water features. This past month’s notably drier weather, with only 90.0mm of rain, has kept some insect numbers lower than typical for Hot Springs. Enjoy the thermal waters with minimal bug interference

Insect activity is expected to be relatively low, though a few mosquitos may emerge around dawn or dusk. The recent 90.0mm of rainfall, significantly drier than last year, has suppressed many insect populations across the Martin area. A relaxed evening is in store

Mosquitos are likely to be present, especially near the Little White River and other damp areas. The notably drier conditions of the last month, with just 90.0mm of rain, have reduced the overall abundance of bugs in Mission. Stay vigilant if you’re out late

Expect moderate mosquito presence, particularly near Lake Mitchell and in garden areas. The recent 90.0mm of rain, marking a drier-than-average month, has nevertheless concentrated some insects in favorable spots around Mitchell. Keep your repellent handy

A low risk of bug bites is expected, with only sporadic mosquito activity. The notably drier conditions of the past 30 days, with merely 90.0mm of rain, have resulted in a subdued insect presence for residents of Oglala. Outdoor plans should be mostly bug-free

Mosquitos will be active, especially in the evening hours near any lingering moisture. The significantly drier month, with only 90.0mm of rain, means fewer widespread insect breeding grounds across Parkston. A light repellent is advised for outdoor dining

Bug activity is anticipated to be low, though isolated mosquitos may be found in sheltered areas. The past month’s notably drier weather, with only 90.0mm of rain, has generally kept insect populations at bay for those in Pine Ridge. Enjoy the open air

Mosquitos will be active, especially near the Missouri River and other damp spots. The region’s notably drier conditions, receiving only 90.0mm of rain this past month, have limited the proliferation of many biting insects in Platte. Bring repellent for riverside strolls

A low risk of insect bites is forecast, with minimal mosquito presence. The significantly drier weather this past month, with only 90.0mm of rain, has kept most insect numbers lower than usual around Porcupine. Enjoy a peaceful evening

Mosquitos are expected to be active, particularly as evening approaches. Despite the 90.0mm of rain recorded this past month being notably drier than average, some areas in Rosebud still harbor active bug populations. Keep an eye out if you’re near water

Expect moderate mosquito activity, particularly near the Missouri River. The notably drier conditions over the last 30 days, with just 90.0mm of rain, have somewhat mitigated the usual bug pressure in Springfield. Consider repellent for your evening walk

Mosquitos will be active, especially in the evening near any damp ground or vegetation. The past month’s notably drier climate, with only 90.0mm of rain, has reduced the overall insect population for those enjoying Tyndall. Repellent is a good idea for outdoor gatherings

Mosquitos are likely to be present, particularly near the lake and in shaded areas. The significantly drier conditions this past month, with only 90.0mm of rain, have paradoxically concentrated some insect populations in remaining moist locations in Wagner. Be prepared with bug spray

Moderate mosquito activity is expected, particularly near the cave entrance and in forested areas. The notably drier conditions over the last 30 days, seeing just 90.0mm of rain, have somewhat limited the overall bug pressure within Wind Cave National Park. Campers and hikers should still use repellent

Mosquitos are expected to be active, especially around local water sources. The region’s notably drier conditions over the past month, with only 90.0mm of rain, have still allowed some insect populations to thrive in Winner’s favorable spots. Be mindful of evening activity

Expect a high chance of mosquito and gnat encounters, particularly near the Missouri River and other water bodies. Despite the past month being notably drier with only 90.0mm of rain, the conditions today are conducive to high bug activity in Yankton. Ensure you’re protected

With temperatures at 67.8°F and 92% humidity, expect a moderate presence of mosquitoes, especially near standing water. The drier-than-usual past month, with significantly less rain than last year, is contributing to a slightly lower overall bug pressure in Baltic this season. Consider applying repellent before evening outdoor activities in Baltic

Moderate risk for bug bites today, as the 67.8°F temperature and high 92% humidity create favorable conditions for gnats and biting flies. The local insect population in Beresford is experiencing reduced pressure due to the past month’s notably drier conditions compared to the previous year. Hikers in Beresford should still prepare for some insect activity

High bug activity is anticipated in Brandon due to the 67.8°F and 92% humidity, which are ideal for mosquito breeding. Despite the current conditions, the cumulative effect of a much drier past 30 days compared to last year means that overall insect numbers are somewhat suppressed. Residents of Brandon should take precautions during dusk

A moderate likelihood of encountering biting insects like mosquitoes and midges is present given the 67.8°F and 92% humidity. The notable decrease in rainfall over the last month compared to the same period last year means that Canton is seeing fewer pest insects than might otherwise be expected. Enjoying the outdoors in Canton remains pleasant with a bit of repellent

Expect a moderate risk of bug bites in Crooks, with 67.8°F and 92% humidity making conditions conducive for mosquitoes. The recent period of significantly less rain over the past month, relative to last year, is helping to keep the overall bug population in Crooks somewhat in check. Evening strolls in Crooks may encounter some buzzing

High potential for mosquito and biting fly encounters given the 67.8°F and 92% humidity. The drier trend over the past month, with rainfall totals well below last year’s, means that the general bug pressure in Dakota Dunes is lower than it could have been. Visitors to Dakota Dunes should definitely bring insect repellent

Moderate bug bite risk today, with 67.8°F and 92% humidity favoring mosquito activity. The past month’s rainfall, being considerably less than last year, has resulted in a diminished overall bug presence throughout Dell Rapids. Just Bite Me products are readily available in Dell Rapids for your convenience

High probability of bug bites, particularly from mosquitoes, given the warm 67.8°F and high 92% humidity. The fact that Elk Point has received notably less rain over the last 30 days than during the same time last year is contributing to a somewhat reduced overall insect population. Enjoying the riverfront in Elk Point will be more comfortable with repellent

Moderate risk of bug bites in Garretson, as the 67.8°F and 92% humidity create suitable conditions for gnats and midges. The drier climate over the past month, compared to the previous year’s rainfall, means that the general bug pressure around Garretson is a bit lower. Be prepared for some insect activity around Garretson’s natural areas

Moderate bug bite risk is present in Harrisburg, with 67.8°F and 92% humidity encouraging mosquito activity. The recent 30-day period, characterized by significantly less rainfall than last year, is contributing to a slightly lower overall bug population in Harrisburg. Outdoor enthusiasts in Harrisburg might want to pack bug spray

With conditions at 67.8°F and 92% humidity, there’s a moderate risk of encountering mosquitoes and other biting insects in Hartford. The notably drier conditions over the last month, compared to last year’s rainfall, are helping to suppress the overall bug pressure in Hartford. Residents of Hartford can still enjoy evenings outdoors with minimal fuss

Moderate risk of bug bites today for visitors to Lake Herman State Park, with 67.8°F and 92% humidity creating favorable conditions for mosquitoes and gnats. The past month’s rainfall, being considerably less than last year, has led to a diminished overall bug presence within Lake Herman State Park. Campers at Lake Herman State Park should still bring repellent

Moderate risk for bug bites today in Lennox, with 67.8°F and 92% humidity creating favorable conditions for mosquitoes. The past month’s rainfall, significantly lower than the previous year, has led to a reduction in the overall insect population within Lennox. Keep an eye out for buzzing when gardening in Lennox

Moderate bug bite risk can be expected in Madison due to the 67.8°F and 92% humidity. While current conditions are ripe for insects, the notably drier climate over the last month compared to last year’s rainfall has somewhat limited the overall bug pressure in Madison. Consider repellent for lakeside activities in Madison

High bug bite potential for hikers and campers in Newton Hills State Park, due to the 67.8°F and 92% humidity. Despite the current conditions, the cumulative effect of a much drier past 30 days compared to last year means that overall insect numbers are somewhat suppressed in Newton Hills State Park. Prepare for mosquito activity in Newton Hills State Park

High potential for bug bites today, particularly from mosquitoes, with 67.8°F and 92% humidity. The month’s rainfall being considerably less than last year’s has led to a generally lower bug pressure than North Sioux City might typically experience. Those enjoying the Missouri River in North Sioux City should be vigilant

Low bug bite risk is projected for Salem, despite the 67.8°F and 92% humidity, as the drier conditions have tempered overall insect activity. The region has experienced notably less rainfall in the past 30 days compared to the same period last year, which is currently reducing the bug population in Salem. Outdoor activities in Salem should be relatively undisturbed by insects

Moderate risk of bug bites in Sioux Falls, with 67.8°F and 92% humidity creating conditions conducive for mosquitoes. The recent period of notably less rain over the past month, relative to last year, is contributing to a slightly lower overall bug population in Sioux Falls. Enjoying the parks in Sioux Falls will be more comfortable with some bug spray

Moderate bug bite risk today in Tea, with 67.8°F and 92% humidity favoring mosquito presence. The significantly drier past month, compared to the same period last year, means that Tea is currently experiencing somewhat reduced overall bug pressure. Residents of Tea planning evening outdoor gatherings should be aware

High probability of bug bites, particularly from mosquitoes and biting flies, given the warm 67.8°F and high 92% humidity in Union County State Park. The fact that Union County State Park has received notably less rain over the last 30 days than during the same time last year is contributing to a somewhat reduced overall insect population. Hikers in Union County State Park should apply insect repellent

High potential for bug bites, especially from mosquitoes, given the warm 67.8°F and high 92% humidity. Despite the immediate conditions, the noticeably drier rainfall pattern over the last 30 days, compared to last year, is keeping the overall insect population in Vermillion somewhat suppressed. Students at USD in Vermillion should be mindful of insects near campus green spaces