South Dakota (Sioux Falls)
January
Weather in South Dakota for January 2026
Your guide to South Dakota weather in January - trends and predictions
With an average of 5 snowy days, South Dakota usually enjoys a light touch of snow in January.
According to South Dakota snow forecast for January 2026, no snow is expected at the beginning of the month.The forecast for the next days in South Dakota predicts a temperature of 4.5 °F, which is cooler than the historical average.
In general, the average temperature in South Dakota at the beginning of January is 1 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 2.3 °F by the end of January.
New! Chat with our AI weatherman - it’s amazing and free.
Snow Forecast ❄️
Temperatures
More
26
Dry days
0
Rainy days
5
Snow days
-4°/-11°
Temperatures
21 km/h
Avg max wind
78 %
Avg humidity
South Dakota Weather January
Move between months or click on a day
What’s the Weather Like in South Dakota This January?
Discover the average temperatures and weather trends across South Dakota’s cities this January.
Temperatures trend during January in South Dakota
See the weather trend as well as the moving average line
January weather in South Dakota day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Jan. 1 |  Sunny | 6° /-1° | 0 mm | 0 cm | |
| Jan. 2 |  Partly cloudy | 7° /1° | 0 mm | 0 cm | |
| Jan. 3 | Partly cloudy | 8° /1° | 0 mm | 0 cm | |
| Jan. 4 | Sunny | -4° /-10° | 0 mm | 0 cm | |
| Jan. 5 |  Overcast | -3° /-8° | 0 mm | 0 cm | |
| Jan. 6 |  Moderate snow | -3° /-8° | 0.7 mm | 0.6 cm | |
| Jan. 7 |  Mist | -4° /-10° | 0 mm | 0 cm | |
| Jan. 8 |  Heavy snow | -3° /-8° | 8.3 mm | 7 cm | |
| Jan. 9 | Moderate snow | -1° /-12° | 0.6 mm | 0.5 cm | |
| Jan. 10 | Heavy snow | -5° /-13° | 1.4 mm | 1.2 cm | |
| Jan. 11 | Overcast | -4° /-12° | 0 mm | 0 cm | |
| Jan. 12 |  Light snow | -8° /-14° | 0 mm | 0 cm | |
| Jan. 13 | Light snow | -13° /-19° | 0.1 mm | 0 cm | |
| Jan. 14 | Overcast | -15° /-23° | 0 mm | 0 cm | |
| Jan. 15 | Overcast | -10° /-21° | 0 mm | 0 cm | |
| Jan. 16 | Partly cloudy | -8° /-14° | 0 mm | 0 cm | |
| Jan. 17 | Overcast | -6° /-13° | 0 mm | 0 cm | |
| Jan. 18 | Moderate snow | -11° /-18° | 0.1 mm | 0.1 cm | |
| Jan. 19 |  Light freezing rain | -14° /-22° | 0.1 mm | 0 cm | |
| Jan. 20 |  Freezing fog | -17° /-26° | 0 mm | 0 cm | |
| Jan. 21 | Overcast | -7° /-21° | 0 mm | 0 cm | |
| Jan. 22 | Freezing fog | -2° /-11° | 0 mm | 0 cm | |
| Jan. 23 | Freezing fog | -3° /-11° | 0.1 mm | 0 cm | |
| Jan. 24 | Freezing fog | -1° /-7° | 0 mm | 0 cm | |
| Jan. 25 | Light snow | 0° /-4° | 0.1 mm | 0 cm | |
| Jan. 26 | Light snow | 0° /-7° | 0 mm | 0 cm | |
| Jan. 27 | Freezing fog | 3° /-8° | 0 mm | 0 cm | |
| Jan. 28 | Fog | 3° /-9° | 0 mm | 0 cm | |
| Jan. 29 | Overcast | 4° /-5° | 0 mm | 0 cm | |
| Jan. 30 | Fog | 5° /-4° | 0 mm | 0 cm | |
| Jan. 31 | Freezing fog | 1° /-4° | 0 mm | 0 cm | |
| Next | |||||
Important Notice
Our weather forecast for South Dakota in January is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the South Dakota forecast closer to your planned date for the most up-to-date weather information.
Change Month
South Dakota in January - FAQ
What are the expected maximum and minimum temperatures in South Dakota during January?
Brace for cold days with temperatures not exceeding -4° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in South Dakota during January?
Expect minimal rainfall in South Dakota during January, with a total of 11.7 mm over approximately 0 days. This minimal precipitation is unlikely to significantly impact plans.
Will it snow in South Dakota in January 2026?
South Dakota experiences an average snowfall of 9.575 cm during January, occurring over 5 days.
What are the typical wind conditions in South Dakota during January?
The average wind speed in South Dakota during January is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
South Dakota snow forecast January 2026
Track daily snowfall levels and discover South Dakota’s snowy potential this January ❄️
On average, South Dakota sees 5 snowy days during January, with approximately 9.6 cm of total snowfall.
January rainfall patterns in South Dakota
Explore the daily rainfall trends and prepare for South Dakotas January weather 💧
Counties in South Dakota
Select a county for an accurate weather forecast
Top locations in South Dakota
Select a location for an accurate weather forecast
More Locations Quick links
More South Dakota weather pages
You are here
Where is South Dakota?Get accurate weather forecasts for South Dakota, located at latitude 43.55 and longitude -96.7. Stay updated with localized weather information tailored for South Dakota.
Found a mistake?
We appreciate your attention to details. Tell us here.