Heat in South Dakota

Events

259

Deaths

1

Injuries

0

Damage

None recorded

• Heat in South Dakota, July 15 to 16, 20061 death · 21 eventsHigh pressure brought record heat to western South Dakota, with many locations setting all-time record high temperatures.
• Heat in South Dakota, July 28 to 30, 200626 eventsRecord heat and high humidity affected central, north central, and northeast South Dakota for the end of July. Heat indices rose to 105 to 115 degrees across the area. Record high temperatures were set at Pierre, Mobridge, Kennebec, Timber Lake, and Aberdeen.
• Excessive Heat and Heat in South Dakota, June 29, 201924 eventsOppressive temperatures in the mid 90's to around 100 degrees along with dew point readings in the mid to upper 70's produced very dangerous heat conditions with heat index readings in excess of 105 degrees for much of the afternoon and early evening.|Numerous roads across the…
• Excessive Heat and Heat in South Dakota, August 25 to 26, 202424 eventsA strong ridge of high pressure locked in very warm and extremely humid conditions. Dew points in the upper 70s and lower 80s combined with temperatures in the upper 80s to lower 90s to produce daily heat index values from 100 to 120 degrees.
• Heat in South Dakota, September 2 to 3, 202323 eventsA strong ridge of high pressure persisted through the Central and Southern Plains at the start of September and brought hot temperatures to the region with highs in the 90s to around 100 degrees.
• Excessive Heat and Heat in South Dakota, July 13 to 15, 202423 eventsVery warm temperatures with highs in the lower to mid 90s paired with oppressive dew point readings in the upper 70s to lower 80s produced afternoon and evening heat indices generally from 100 to 120 degrees with little overnight recovery.
• Excessive Heat and Heat in South Dakota, July 31, 202422 eventsPooling moisture ahead of a frontal boundary pushed dew point readings into the upper 70s and lower 80s, and temperatures in the upper 80s to lower 90s produced heat index values from 100 to 115 degrees.
• Heat in South Dakota, July 15, 200621 eventsRecord heat occurred across central and north central South Dakota and into parts of northeast South Dakota. Afternoon high temperatures ranged from 105 to as high as 120 degrees. Record highs were set at Pierre, Mobridge, Kennebec, and Timber Lake.
• Excessive Heat and Heat in South Dakota, August 19, 202321 eventsAn expanding upper-level ridge across the southern and central U.S. pushed heat into the region, as moisture pooled just ahead of an advancing frontal zone. The combination of heat and higher dewpoints resulted in afternoon and early evening heat indices from 100 to 115 degrees.
• Excessive Heat and Heat in South Dakota, August 2 to 3, 202421 eventsStagnant conditions south of a stalled frontal boundary across North Dakota and central Minnesota led to high dew points and very warm conditions across the region. Afternoon and early evening heat index values varied from 100 to 110 degrees each afternoon.
• Excessive Heat and Heat in South Dakota, June 29, 202619 eventsA large high pressure system parked over the Mississippi River Valley, bringing several days of hot, southerly flow across the region.
• Heat in South Dakota, June 30, 201918 eventsWith temperatures peaking in the mid to upper 90's and dew points in the lower to mid 70's, heat index values ranged from 100 to 108 during the afternoon and early evening hours.
• Excessive Heat and Heat in South Dakota, July 21 to 23, 202518 eventsMoisture pooled in the vicinity of a nearly stationary boundary early on July 21, which slowly worked northward as a warm front over the next two days while a large upper level ridge expanded across the Northern Plains.
• Excessive Heat and Heat in South Dakota, August 15 to 17, 202517 eventsHeat and moisture pooled near and south of a nearly stationary frontal boundary across eastern South Dakota and southern Minnesota.
• Heat in South Dakota, June 28, 201915 eventsAreas near and south of Interstate 90 experienced the first dangerous heat of the year. Afternoon and early evening temperatures from 90 to 95, along with dew point readings from 72 to 77 resulted in maximum heat index values of 100 to 105 degrees.
• Heat in South Dakota, July 11 to 12, 201814 eventsSignificant evapotranspiration along with very warm temperatures within a strong ridge of high pressure aloft produced dangerous heat index values from 100 to 105 over a two-day period.
• Excessive Heat and Heat in South Dakota, August 8, 202514 eventsHigh levels of moisture pooled along and ahead of an outflow boundary across eastern South Dakota and southwest Minnesota with dew point readings into the the upper 70s to lower 80s.
• Heat in South Dakota, July 3, 201812 eventsResiding just south of a frontal boundary, a very warm and humid air mass brought dangerous heat indices to much of southeast South Dakota.
• Heat in South Dakota, July 11, 201810 eventsSignificant evapotranspiration along with very warm temperatures within a strong ridge of high pressure aloft produced dangerous heat index values from 100 to 105.
• Heat in South Dakota, July 8, 20189 eventsA strong ridge of high pressure aloft brought a hot and very humid air mass to the region. Afternoon temperatures reached 92 to 98 degrees,with a dew point around 70. The heat index reached 100-105.
• Heat in South Dakota, August 5, 20246 eventsAreas ahead of a weak frontal boundary exhibited pooling of moisture with dew point readings into the upper 70s to lower 80s.
• Heat in South Dakota, July 4, 20182 eventsJust south of an outflow from morning convection, sunshine returned temperatures to around 90 degrees, with stifling dew point readings in the upper 70's.
• Heat in South Dakota, September 6, 20221 eventMedical professionals and police determined that a toddler had died due to heat after being left in a vehicle in the Clark Elementary School parking lot. The child was discovered around 5pm.

Heat everywhereEvery kind of event in South Dakota

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.