South Dakota weather in December: Statewide normals and every place, NOAA 1991-2020
In December, South Dakota's statewide normal high is 32°F and normal low 12°F; normal highs run from 25°F in Eureka to 41°F in Hill City (NOAA 1991-2020 normals).
- Statewide normal high
- 32°FDecember, 1991-2020
- Statewide normal low
- 12°FDecember, 1991-2020
- Statewide normal precipitation
- 0.56 inDecember
- Warmest place
- 41°Fnormal high, Hill City
- Coolest place
- 25°Fnormal high, Eureka
Where is South Dakota warmest and wettest in December?
Hill City has the warmest December afternoons (41°F) and Eureka the coolest (25°F). Lead gets the most precipitation (1.51 in) and Winner the least (0.26 in). The most snow falls in Lead (25.3 inches).
Statewide, December averaged 24.5°F in 2021, 15.1°F in 2022, 31.2°F in 2023, 26.3°F in 2024, 25.3°F in 2025, against a 1991-2020 normal of 22.0°F.
| Place | High | Low | Precip. | Snow |
|---|---|---|---|---|
| Sioux Falls | 32°F | 13°F | 0.83 | 8.7 |
| Rapid City | 37°F | 14°F | 0.35 | 6.7 |
| Aberdeen | 29°F | 8°F | 0.61 | 8.0 |
| Brookings | 28°F | 10°F | 0.61 | 6.8 |
| Watertown | 26°F | 9°F | 0.68 | 8.9 |
| Yankton | 34°F | 15°F | 1.03 | 7.6 |
| Mitchell | 32°F | 14°F | 0.49 | – |
| Huron | 30°F | 11°F | 0.66 | 8.4 |
| Spearfish | 37°F | 18°F | 0.72 | 14.9 |
| Pierre | 32°F | 13°F | 0.64 | 6.2 |
| Vermillion | 34°F | 15°F | 0.79 | – |
| Madison | 29°F | 11°F | 0.61 | 7.8 |
| Belle Fourche | 37°F | 15°F | 0.59 | 9.8 |
| Hot Springs | 41°F | 15°F | 0.49 | 5.5 |
| Milbank | 27°F | 10°F | 0.77 | – |
| Mobridge | 32°F | 12°F | 0.51 | 5.7 |
| Lead | 38°F | 19°F | 1.51 | 25.3 |
| Canton | 29°F | 11°F | 0.77 | 7.4 |
| Winner | 37°F | 18°F | 0.26 | – |
| Pine Ridge | 38°F | 13°F | 0.37 | – |
| Chamberlain | 34°F | 15°F | 0.52 | – |
| Sisseton | 28°F | 10°F | 0.60 | 5.5 |
| Flandreau | 28°F | 10°F | 0.85 | 8.5 |
| Redfield | 28°F | 9°F | 0.66 | – |
| Custer | 35°F | 16°F | 0.48 | – |
| Webster | 25°F | 9°F | 1.06 | 7.8 |
| Oglala | 39°F | 16°F | – | – |
| Kyle | 38°F | 12°F | 0.52 | – |
| Wagner | 35°F | 17°F | 0.78 | – |
| Deadwood | 38°F | 15°F | – | – |
| Salem | 28°F | 10°F | 0.67 | – |
| Miller | 30°F | 12°F | 0.59 | 8.7 |
| Gregory | 35°F | 14°F | 0.74 | 10.4 |
| Clear Lake | 26°F | 9°F | 0.91 | 13.6 |
| Britton | 26°F | 7°F | 0.66 | 9.8 |
| Clark | 27°F | 9°F | 0.78 | – |
| Lemmon | 32°F | 12°F | 0.41 | 8.9 |
| Mission | 37°F | 14°F | 0.56 | 6.6 |
| Tyndall | 33°F | 14°F | 0.78 | 7.3 |
| Gettysburg | 29°F | 10°F | 0.40 | 6.7 |
| De Smet | 28°F | 10°F | 0.74 | 7.3 |
| Centerville | 31°F | 12°F | 0.66 | 6.1 |
| Hill City | 41°F | 10°F | 0.49 | 7.0 |
| Ipswich | 28°F | 9°F | 0.48 | 5.7 |
| Arlington | 28°F | 11°F | 0.58 | – |
| Martin | 36°F | 15°F | 0.63 | 8.1 |
| Howard | 33°F | 10°F | 0.69 | 7.6 |
| Faulkton | 29°F | 10°F | 0.57 | 8.6 |
| Wessington Springs | 30°F | 12°F | 0.72 | 8.1 |
| Edgemont | 35°F | 5°F | 0.44 | 6.1 |
| Eureka | 25°F | 8°F | 0.54 | 8.3 |
| Philip | 36°F | 12°F | 0.44 | – |
| Castlewood | 27°F | 9°F | 0.53 | – |
| Armour | 35°F | 14°F | 0.72 | 5.1 |
| Johnson Siding | 40°F | 14°F | 0.45 | – |
| Alexandria | 29°F | 10°F | 0.60 | 8.2 |
| Highmore | 31°F | 12°F | 0.47 | 6.4 |
| Onida | 30°F | 12°F | 0.59 | 7.7 |
| Menno | 32°F | 14°F | 0.82 | 7.8 |
| Selby | 28°F | 10°F | 0.51 | 7.6 |
| Newell | 34°F | 12°F | 0.41 | 8.2 |
| Timber Lake | 30°F | 11°F | 0.57 | 8.3 |
| Bridgewater | 30°F | 13°F | 0.79 | – |
| Dupree | 34°F | 13°F | 0.50 | 8.1 |
| Waubay | 27°F | 11°F | 0.66 | 6.3 |
| Presho | 33°F | 10°F | – | – |
| Murdo | 33°F | 15°F | 0.59 | 10.8 |
| Montrose | 31°F | 12°F | – | – |
| Wilmot | 27°F | 10°F | 0.76 | 8.9 |
| Leola | 26°F | 8°F | 0.45 | – |
| White Lake | 31°F | 13°F | 0.62 | 7.1 |
| Faith | 32°F | 13°F | 0.40 | – |
| Buffalo | 34°F | 13°F | 0.35 | – |
| Bison | 32°F | 13°F | 0.44 | 5.9 |
| Kennebec | 34°F | 13°F | 0.47 | 7.2 |
| Roscoe | 26°F | 9°F | 0.64 | 8.7 |
| Summit | 26°F | 9°F | 0.66 | 11.9 |
| Bonesteel | 34°F | 15°F | 0.33 | 3.7 |
| Pickstown | 35°F | 16°F | 0.66 | 7.1 |
| Pollock | 28°F | 9°F | 0.46 | 7.7 |
| Mellette | 28°F | 7°F | 0.67 | 9.3 |
| Wentworth | 29°F | 13°F | 1.01 | 6.2 |
| Columbia | 27°F | 7°F | 0.50 | 7.2 |
| Conde | 29°F | 8°F | 0.72 | 4.5 |
| Astoria | 26°F | 10°F | – | – |
| Oelrichs | 37°F | 14°F | 0.41 | 8.3 |
| Midland | 36°F | 11°F | – | – |
| Andover | 28°F | 11°F | 0.81 | – |
| Camp Crook | 36°F | 13°F | 0.34 | 7.1 |
| Interior | 39°F | 17°F | 0.54 | 7.7 |
| Wasta | 37°F | 12°F | 0.32 | 5.6 |
| Turton | 27°F | 10°F | 0.73 | – |
| Wood | 37°F | 14°F | 0.51 | 8.4 |
| Forestburg | 31°F | 10°F | 0.64 | 4.8 |
| Winfred | 28°F | 11°F | 0.71 | – |
| Oral | 40°F | 13°F | 0.40 | 6.6 |
| Cottonwood | 36°F | 10°F | 0.48 | 6.0 |
| Stephan | 31°F | 10°F | 0.60 | 4.3 |
| Gann Valley | 31°F | 10°F | 0.32 | 9.6 |
| Aberdeen (35 mi WNW) | 25°F | 9°F | 0.55 | – |
| Academy (2 mi NE) | 33°F | 15°F | 0.50 | 8.2 |
| Antelope Ranger Station | 33°F | 8°F | – | – |
| Ardmore | 40°F | 9°F | 0.56 | 7.8 |
| Bear Ridge | 39°F | 15°F | 0.90 | 16.9 |
| Cedar Butte | 38°F | 16°F | 0.44 | 6.7 |
| Elm Springs (3 mi ESE) | 35°F | 13°F | 0.51 | 6.1 |
| Fort Meade | 39°F | 17°F | 0.50 | 8.2 |
| Fort Pierre (17 mi WSW) | 34°F | 11°F | 0.45 | 6.0 |
| Glad Valley (2 mi W) | 31°F | 10°F | 0.51 | 7.7 |
| Harrington | 37°F | 13°F | 0.60 | 5.6 |
| Harrold (12 mi SSW) | 31°F | 7°F | 0.54 | 8.0 |
| Hereford (12 mi SW) | 36°F | 15°F | 0.37 | 8.3 |
| Hoover | 33°F | 7°F | 0.46 | 9.8 |
| Kirley (6 mi N) | 33°F | 12°F | 0.61 | 7.3 |
| Ladner (9 mi SW) | 31°F | 13°F | 0.46 | 8.7 |
| Lake Sharpe Project | 34°F | 11°F | 0.35 | 3.9 |
| Lodgepole (5 mi SW) | 31°F | 7°F | 0.28 | – |
| Longvalley | 39°F | 17°F | 0.55 | – |
| Ludlow (3 mi SSE) | 32°F | 12°F | 0.33 | – |
| Manderson (3 mi NE) | 39°F | 15°F | – | – |
| Maurine (12 mi SW) | 34°F | 9°F | 0.86 | 7.6 |
| McIntosh (6 mi SE) | 30°F | 11°F | 0.42 | 7.4 |
| McLaughlin | 29°F | 9°F | 0.58 | 10.2 |
| Milesville (5 mi NE) | 34°F | 13°F | 0.55 | 6.5 |
| Mission Ridge (5 mi NW) | 32°F | 15°F | 0.40 | – |
| Mount Rushmore National Memorial | 37°F | 20°F | 0.50 | 6.6 |
| Oahe Dam | 34°F | 12°F | 0.53 | – |
| Pactola Dam | 37°F | 13°F | 0.36 | 5.4 |
| Pierre (24 mi S) | 33°F | 15°F | 0.37 | – |
| Plainview (6 mi SSW) | 34°F | 10°F | 0.38 | 7.1 |
| Porcupine (11 mi N) | 39°F | 11°F | 0.48 | – |
| Ralph (1 mi N) | 33°F | 10°F | 0.52 | – |
| Rauville (2 mi W) | 27°F | 9°F | 0.70 | 7.6 |
| Red Owl | 35°F | 11°F | 0.59 | 9.1 |
| Redig (11 mi NE) | 34°F | 12°F | 0.43 | 6.4 |
| Rochford (2 mi WNW) | 37°F | 6°F | – | – |
| Roy Lake | 27°F | 10°F | 0.76 | 11.1 |
| Shadehill Reservoir | 34°F | 8°F | – | – |
| Victor (4 mi N) | 25°F | 9°F | 0.84 | 9.9 |
| Wind Cave | 39°F | 15°F | 0.53 | 7.5 |
| Zeona (10 mi SSW) | 34°F | 10°F | – | – |
Source: NOAA NCEI nClimDiv statewide normals; NOAA NCEI 1991-2020 monthly normals for each station.