# Counties in South Dakota by average annual temperature, 2025

All 66 values come from NOAA National Centers for Environmental Information for 2025, so the places are comparable.

- Indicator id: `average_temperature_annual`
- Unit: °F
- Definition: Mean air temperature from January to December, in degrees Fahrenheit: the average of the 12 monthly mean temperatures. NOAA computes it from its climate divisional dataset (nClimDiv): station readings interpolated onto a 5 km grid and averaged over the area.
- Source: NOAA National Centers for Environmental Information, NOAA Climate at a Glance, January to December average temperature, counties (https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping)
- Publisher page: https://invokely.ai/en/publishers/noaa-ncei
- Retrieved: 2026-10-12
- Citation: NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December average temperature, counties. From the NOAA Monthly U.S. Climate Divisional Database (nClimDiv), doi:10.7289/V5M32STR. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Retrieved 2026-10-12.
- Web page: https://invokely.ai/rankings/average-annual-temperature/south-dakota-counties

| Rank | Place | °F |
|---:|---|---:|
| 1 | Mellette County | 50.2 |
| 2 | Charles Mix County | 49.9 |
| 2 | Jackson County | 49.9 |
| 4 | Clay County | 49.7 |
| 4 | Gregory County | 49.7 |
| 6 | Bon Homme County | 49.6 |
| 6 | Oglala Lakota County | 49.6 |
| 6 | Tripp County | 49.6 |
| 9 | Fall River County | 49.5 |
| 9 | Union County | 49.5 |
| 9 | Yankton County | 49.5 |
| 12 | Todd County | 49.4 |
| 13 | Jones County | 49.3 |
| 14 | Brule County | 49.1 |
| 14 | Douglas County | 49.1 |
| 16 | Lyman County | 49 |
| 17 | Hutchinson County | 48.9 |
| 18 | Bennett County | 48.8 |
| 19 | Turner County | 48.7 |
| 20 | Aurora County | 48.6 |
| 21 | Haakon County | 48.4 |
| 22 | Lincoln County | 48.3 |
| 23 | Davison County | 48.2 |
| 24 | Stanley County | 47.9 |
| 25 | Hanson County | 47.8 |
| 26 | McCook County | 47.7 |
| 26 | Meade County | 47.7 |
| 26 | Minnehaha County | 47.7 |
| 26 | Pennington County | 47.7 |
| 30 | Buffalo County | 47.6 |
| 30 | Custer County | 47.6 |
| 30 | Sanborn County | 47.6 |
| 33 | Hughes County | 47.5 |
| 34 | Miner County | 47.3 |
| 35 | Beadle County | 47.2 |
| 35 | Jerauld County | 47.2 |
| 37 | Butte County | 47.1 |
| 38 | Lake County | 46.7 |
| 38 | Sully County | 46.7 |
| 40 | Ziebach County | 46.6 |
| 41 | Moody County | 46.5 |
| 42 | Hand County | 46.3 |
| 43 | Kingsbury County | 46.2 |
| 44 | Dewey County | 46.1 |
| 45 | Spink County | 46 |
| 46 | Hyde County | 45.9 |
| 47 | Brookings County | 45.6 |
| 48 | Harding County | 45.4 |
| 49 | Faulk County | 45.3 |
| 49 | Potter County | 45.3 |
| 51 | Clark County | 45.2 |
| 51 | Perkins County | 45.2 |
| 53 | Grant County | 45 |
| 53 | Hamlin County | 45 |
| 55 | Corson County | 44.7 |
| 56 | Deuel County | 44.6 |
| 57 | Roberts County | 44.5 |
| 58 | Walworth County | 44.3 |
| 59 | Codington County | 44.2 |
| 59 | Edmunds County | 44.2 |
| 61 | Brown County | 44.1 |
| 62 | Campbell County | 43.8 |
| 62 | Lawrence County | 43.8 |
| 64 | Day County | 43.5 |
| 65 | McPherson County | 43 |
| 66 | Marshall County | 42.9 |