South Dakota
On Saturday , 2 of 8 South Dakota cities had a day more extreme than any in 10 years or more. In the county averages of Tuesday 29 September 2026, 54 of 66 South Dakota counties did.
Cities
| City | Day | High | Low | Precipitation | The day | Month so far, rank | Years compared |
|---|---|---|---|---|---|---|---|
| Aberdeen, SD Notable | 73°F | 42°F | 0.08 in | the wettest 3 October since 2016 | 55 | 128 | |
| Mobridge, SD Notable | 72°F | 39°F | 0.14 in | the wettest 3 October since 1991 | 51 | 104 | |
| Huron, SD | 73°F | 45°F | 0.01 in | the warmest 3 October since 2025 | 66 | 144 | |
| Mitchell, SD | 75°F | 50°F | a trace | the warmest 3 October since 2025 | 57 | 124 | |
| Rapid City Downtown, SD | 72°F | 52°F | 0.00 in | the warmest 3 October since 2025 | 40 | 114 | |
| Rapid City, SD | 75°F | 45°F | 0.00 in | the warmest 3 October since 2025 | 32 | 84 | |
| Sioux Falls, SD | 71°F | 51°F | a trace | the warmest 3 October since 2025 | 60 | 133 | |
| Sisseton, SD | 69°F | 42°F | 0.03 in | the warmest 3 October since 2025 | 38 | 94 |
- Saturday 3 October 2026: 0.08 in of precipitation in Aberdeen, SD, the wettest 3 October since 2016, tied 14th wettest of 133 (with 2013 and 1931).
- Saturday 3 October 2026: 0.14 in of precipitation in Mobridge, SD, the wettest 3 October since 1991, tied 7th wettest of 109 (with 1991).
- 2026 so far averaged 53.4°F in Huron, SD, the warmest 1 January to 3 October since 2012, 4th warmest of 145.
- 2026 so far averaged 54.8°F in Mitchell, SD, the warmest 1 January to 3 October since 2012, tied 7th warmest of 127 (with 2006).
- 2026 so far averaged 56.9°F in Rapid City Downtown, SD, the warmest 1 January to 3 October on record, in 115 years since 1888 (1972 excluded: 175 of 277 days missing; 1973 excluded: 276 of 276 days missing; 1974 excluded: 276 of 276 days missing; 21 more years excluded for missing days); provisional.
- 2026 so far averaged 55.2°F in Rapid City, SD, tying the record for the warmest 1 January to 3 October, set in 2012, in 84 years since 1943; provisional.
- The last freeze of spring 2026 in Sioux Falls, SD came on Wednesday 20 May 2026, the latest since 2002, tied 16th latest of 132 (with 2002, 1969, 1967 and 1 other year).
- The 60 days to Saturday 3 October 2026 brought 2.67 in of precipitation in Sisseton, SD, the driest 60 days to 3 October since 2015, 25th driest of 94.
Counties
| County | Day | The day in the county average |
|---|---|---|
| Aurora County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Beadle County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Bennett County, SD Notable | the warmest 29 September night in the county average since 2025 | |
| Bon Homme County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Brookings County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Brown County, SD Notable | the wettest 29 September in the county average since 1965 | |
| Brule County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Buffalo County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Campbell County, SD Notable | the wettest 29 September in the county average since 1965 | |
| Charles Mix County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Clark County, SD Notable | the wettest 29 September in the county average since 1988 | |
| Clay County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Codington County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Davison County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Day County, SD Notable | the wettest 29 September in the county average since 1988 | |
| Deuel County, SD Notable | the warmest 29 September night in the county average since 1995 | |
| Dewey County, SD Notable | the wettest 29 September in the county average since 1965 | |
| Douglas County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Edmunds County, SD Notable | the wettest 29 September in the county average since 1965 | |
| Faulk County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Grant County, SD Notable | the warmest 29 September night in the county average since 1995 | |
| Gregory County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Haakon County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Hamlin County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Hand County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Hanson County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Hughes County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Hutchinson County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Hyde County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Jerauld County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Jones County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Kingsbury County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Lake County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Lincoln County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Lyman County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Marshall County, SD Notable | the wettest 29 September in the county average since 1988 | |
| McCook County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| McPherson County, SD Notable | the wettest 29 September in the county average since the data begin in 1951 | |
| Mellette County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Miner County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Minnehaha County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Moody County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Potter County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Roberts County, SD Notable | the wettest 29 September in the county average since 1988 | |
| Sanborn County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Spink County, SD Notable | the wettest 29 September in the county average since 1965 | |
| Stanley County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Sully County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Todd County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Tripp County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Turner County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Union County, SD Notable | the warmest 29 September night in the county average since 1983 | |
| Walworth County, SD Notable | the wettest 29 September in the county average since 1965 | |
| Yankton County, SD Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Butte County, SD | the warmest 29 September in the county average since 2025 | |
| Corson County, SD | the warmest 29 September in the county average since 2025 | |
| Custer County, SD | the warmest 29 September in the county average since 2025 | |
| Fall River County, SD | the warmest 29 September in the county average since 2025 | |
| Harding County, SD | the warmest 29 September in the county average since 2025 | |
| Jackson County, SD | the warmest 29 September in the county average since 2025 | |
| Lawrence County, SD | the warmest 29 September in the county average since 2025 | |
| Meade County, SD | the warmest 29 September in the county average since 2025 | |
| Oglala Lakota County, SD | the warmest 29 September in the county average since 2025 | |
| Pennington County, SD | the warmest 29 September in the county average since 2025 | |
| Perkins County, SD | the warmest 29 September in the county average since 2025 | |
| Ziebach County, SD | the warmest 29 September in the county average since 2025 |
Records set this year
- RecordTuesday 4 August 2026: a low of 43°F in Rapid City, SD, the coldest 4 August night on record, in 85 years since 1942; provisional, awaiting the National Weather Service report.
- RecordSunday 2 August 2026: a high of 104°F in Rapid City, SD, the warmest 2 August on record, in 85 years since 1942; provisional, awaiting the National Weather Service report.
- RecordSunday 26 July 2026: a high of 105°F in Rapid City, SD, the warmest 26 July on record, in 84 years since 1943; provisional, awaiting the National Weather Service report.
- RecordSaturday 25 July 2026: a high of 112°F in Rapid City, SD, the warmest 25 July on record, in 84 years since 1943; provisional, awaiting the National Weather Service report.
- RecordSaturday 25 July 2026: a high of 110°F in Rapid City Downtown, SD, the warmest 25 July on record, in 115 years since 1888 (no value for 1972, 1973, 1974 and 21 other years); provisional, awaiting the National Weather Service report.
- RecordTuesday 14 July 2026: a high of 102°F in Rapid City Downtown, SD, the warmest 14 July on record, in 115 years since 1888 (no value for 1972, 1973, 1974 and 21 other years); provisional, awaiting the National Weather Service report.
- RecordSaturday 11 July 2026: a high of 101°F in Rapid City Downtown, SD, the warmest 11 July on record, in 115 years since 1888 (no value for 1972, 1973, 1974 and 21 other years); provisional, awaiting the National Weather Service report.
- RecordSunday 7 June 2026: a high of 98°F in Rapid City Downtown, SD, the warmest 7 June on record, in 115 years since 1888 (no value for 1972, 1973, 1974 and 21 other years); provisional, awaiting the National Weather Service report.
- RecordMonday 25 May 2026: a high of 94°F in Sisseton, SD, the warmest 25 May on record, in 94 years since 1932 (no value for 1950); provisional, awaiting the National Weather Service report.
- RecordMonday 25 May 2026: a high of 89°F in Rapid City, SD, the warmest 25 May on record, in 84 years since 1943; provisional, awaiting the National Weather Service report.
- RecordWednesday 13 May 2026: a high of 93°F in Rapid City, SD, the warmest 13 May on record, in 84 years since 1943; provisional, awaiting the National Weather Service report.
- RecordThursday 7 May 2026: a low of 25°F in Sisseton, SD, the coldest 7 May night on record, in 94 years since 1932 (no value for 1950); provisional, awaiting the National Weather Service report.
- RecordWednesday 6 May 2026: a low of 23°F in Rapid City, SD, the coldest 6 May night on record, in 84 years since 1943; provisional, awaiting the National Weather Service report.
- RecordWednesday 6 May 2026: a low of 20°F in Mobridge, SD, the coldest 6 May night on record, in 107 years since 1911 (no value for 1916, 1917, 1920 and 6 other years); provisional, awaiting the National Weather Service report.
- RecordFriday 1 May 2026: a low of 22°F in Mobridge, SD, the coldest 1 May night on record, in 106 years since 1911 (no value for 1916, 1917, 1920 and 7 other years); provisional, awaiting the National Weather Service report.
- RecordWednesday 22 April 2026: a high of 91°F in Rapid City Downtown, SD, the warmest 22 April on record, in 115 years since 1888 (no value for 1972, 1973, 1974 and 21 other years); provisional, awaiting the National Weather Service report.
- RecordWednesday 22 April 2026: a high of 93°F in Huron, SD, the warmest 22 April on record, in 145 years since 1882; provisional, awaiting the National Weather Service report.
- RecordWednesday 22 April 2026: a high of 93°F in Aberdeen, SD, the warmest 22 April on record, in 132 years since 1893 (no value for 1903 and 1909); provisional, awaiting the National Weather Service report.
- RecordFriday 10 April 2026: a low of 13°F in Aberdeen, SD, the coldest 10 April night on record, in 133 years since 1893 (no value for 1909); provisional, awaiting the National Weather Service report.
- RecordWednesday 25 March 2026: a high of 82°F in Rapid City, SD, the warmest 25 March on record, in 84 years since 1943; provisional, awaiting the National Weather Service report.
- RecordWednesday 25 March 2026: a high of 81°F in Rapid City Downtown, SD, the warmest 25 March on record, in 116 years since 1888 (no value for 1973, 1974, 1975 and 20 other years); provisional, awaiting the National Weather Service report.
- RecordSaturday 21 March 2026: a high of 72°F in Sisseton, SD, the warmest 21 March on record, in 91 years since 1932 (no value for 1950, 1951, 1980 and 1 other year); provisional, awaiting the National Weather Service report.
- RecordSaturday 21 March 2026: a high of 89°F in Sioux Falls, SD, the warmest 21 March on record, in 133 years since 1893 (no value for 1901); provisional, awaiting the National Weather Service report.
- RecordSaturday 21 March 2026: a high of 87°F in Rapid City, SD, the warmest 21 March on record, in 84 years since 1943; provisional, awaiting the National Weather Service report.
- RecordSaturday 21 March 2026: a high of 85°F in Rapid City Downtown, SD, the warmest 21 March on record, in 116 years since 1888 (no value for 1973, 1974, 1975 and 20 other years); provisional, awaiting the National Weather Service report.
- RecordFriday 20 March 2026: a high of 78°F in Sioux Falls, SD, the warmest 20 March on record, in 133 years since 1893 (no value for 1901); provisional, awaiting the National Weather Service report.
- RecordFriday 20 March 2026: a high of 85°F in Rapid City, SD, the warmest 20 March on record, in 84 years since 1943; provisional, awaiting the National Weather Service report.
- RecordFriday 20 March 2026: a high of 82°F in Rapid City Downtown, SD, the warmest 20 March on record, in 116 years since 1888 (no value for 1973, 1974, 1975 and 20 other years); provisional, awaiting the National Weather Service report.
- RecordFriday 20 March 2026: a high of 83°F in Mitchell, SD, the warmest 20 March on record, in 130 years since 1895 (no value for 1913 and 1973); provisional, awaiting the National Weather Service report.
- RecordFriday 20 March 2026: a high of 81°F in Huron, SD, the warmest 20 March on record, in 145 years since 1882; provisional, awaiting the National Weather Service report.
- RecordThursday 19 March 2026: a high of 86°F in Rapid City, SD, the warmest 19 March on record, in 84 years since 1943; provisional, awaiting the National Weather Service report.
- RecordThursday 19 March 2026: a high of 83°F in Rapid City Downtown, SD, the warmest 19 March on record, in 116 years since 1888 (no value for 1973, 1974, 1975 and 20 other years); provisional, awaiting the National Weather Service report.
- RecordThursday 19 March 2026: a high of 80°F in Mobridge, SD, the warmest 19 March on record, in 108 years since 1911 (no value for 1920, 1921, 1922 and 5 other years); provisional, awaiting the National Weather Service report.
- RecordThursday 19 March 2026: a high of 76°F in Aberdeen, SD, the warmest 19 March on record, in 133 years since 1893 (no value for 1952); provisional, awaiting the National Weather Service report.
- RecordWednesday 18 March 2026: a high of 81°F in Rapid City, SD, the warmest 18 March on record, in 84 years since 1943; provisional, awaiting the National Weather Service report.
- RecordMonday 16 March 2026: a low of -4°F in Mobridge, SD, the coldest 16 March night on record, in 105 years since 1912 (no value for 1913, 1920, 1921 and 7 other years); provisional, awaiting the National Weather Service report.
- RecordSunday 8 March 2026: a high of 73°F in Sioux Falls, SD, the warmest 8 March on record, in 133 years since 1893 (no value for 1901); provisional, awaiting the National Weather Service report.
- RecordSunday 8 March 2026: a high of 79°F in Rapid City, SD, the warmest 8 March on record, in 84 years since 1943; provisional, awaiting the National Weather Service report.
- RecordSunday 8 March 2026: a high of 76°F in Rapid City Downtown, SD, the warmest 8 March on record, in 116 years since 1888 (no value for 1973, 1974, 1975 and 20 other years); provisional, awaiting the National Weather Service report.
- RecordSunday 8 March 2026: a high of 72°F in Mobridge, SD, the warmest 8 March on record, in 107 years since 1911 (no value for 1913, 1920, 1921 and 6 other years); provisional, awaiting the National Weather Service report.
- RecordSunday 8 March 2026: a high of 74°F in Huron, SD, the warmest 8 March on record, in 145 years since 1882; provisional, awaiting the National Weather Service report.
- RecordSunday 8 March 2026: a high of 70°F in Aberdeen, SD, the warmest 8 March on record, in 133 years since 1893 (no value for 1938); provisional, awaiting the National Weather Service report.
- RecordMonday 16 February 2026: a high of 64°F in Mitchell, SD, the warmest 16 February on record, in 131 years since 1893 (no value for 1894, 1895 and 1973); provisional, awaiting the National Weather Service report.
- RecordSunday 15 February 2026: a high of 61°F in Sisseton, SD, the warmest 15 February on record, in 91 years since 1932 (no value for 1934, 1943, 1948 and 1 other year); provisional, awaiting the National Weather Service report.
- RecordSunday 15 February 2026: a high of 59°F in Mobridge, SD, the warmest 15 February on record, in 104 years since 1911 (no value for 1916, 1917, 1918 and 9 other years); provisional, awaiting the National Weather Service report.
- RecordSunday 15 February 2026: a high of 67°F in Mitchell, SD, the warmest 15 February on record, in 129 years since 1893 (no value for 1894, 1895, 1903 and 2 other years); provisional, awaiting the National Weather Service report.
- RecordSaturday 14 February 2026: a high of 55°F in Sisseton, SD, the warmest 14 February on record, in 94 years since 1932 (no value for 1950); provisional, awaiting the National Weather Service report.
- RecordFriday 13 February 2026: a high of 56°F in Sisseton, SD, the warmest 13 February on record, in 91 years since 1932 (no value for 1934, 1938, 1950 and 1 other year); provisional, awaiting the National Weather Service report.
- RecordFriday 13 February 2026: a high of 60°F in Sioux Falls, SD, the warmest 13 February on record, in 134 years since 1893; provisional, awaiting the National Weather Service report.
- RecordThursday 5 February 2026: a high of 73°F in Rapid City, SD, the warmest 5 February on record, in 84 years since 1943; provisional, awaiting the National Weather Service report.
- RecordThursday 5 February 2026: a high of 69°F in Rapid City Downtown, SD, the warmest 5 February on record, in 116 years since 1888 (no value for 1973, 1974, 1975 and 20 other years); provisional, awaiting the National Weather Service report.
- RecordThursday 5 February 2026: a high of 58°F in Mobridge, SD, the warmest 5 February on record, in 106 years since 1911 (no value for 1916, 1917, 1920 and 7 other years); provisional, awaiting the National Weather Service report.
- RecordThursday 15 January 2026: a high of 45°F in Sisseton, SD, the warmest 15 January on record, in 91 years since 1933 (no value for 1937, 1975 and 1987); provisional, awaiting the National Weather Service report.
- RecordMonday 12 January 2026: a high of 56°F in Mitchell, SD, the warmest 12 January on record, in 126 years since 1893 (no value for 1894, 1895, 1904 and 5 other years); provisional, awaiting the National Weather Service report.
- RecordSunday 4 January 2026: a high of 67°F in Rapid City, SD, the warmest 4 January on record, in 84 years since 1943; provisional, awaiting the National Weather Service report.
- Records set this year not listed
- 0