Pennington County (Rapid City)
January
Weather in Pennington County, South Dakota for January 2026
Your guide to Pennington County weather in January - trends and predictions
In general, the average temperature in Pennington County at the beginning of January is -5.6 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 5.7 °F by the end of January.
The climate of Pennington County in January is notably wet, with an average of 12 rainy days, and a total of 14.5 mm of precipitation.
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Temperatures
Rain 🌧️
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19
Dry days
12
Rainy days
0
Snow days
-1°/-9°
Temperatures
23 km/h
Avg max wind
69 %
Avg humidity
Pennington County Weather January
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Temperatures trend during January in Pennington County
See the weather trend as well as the moving average line
January weather in Pennington County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Jan. 1 |  Cloudy | 0° /-8° | 0 mm | 1 | |
| Jan. 2 | Cloudy | -2° /-7° | 0 mm | 1 | |
| Jan. 3 |  Light freezing rain | -5° /-8° | 2.5 mm | 1 | |
| Jan. 4 | Light freezing rain | -9° /-13° | 3.3 mm | 1 | |
| Jan. 5 | Light freezing rain | -10° /-15° | 1.3 mm | 1 | |
| Jan. 6 |  Overcast | -5° /-13° | 0.3 mm | 1 | |
| Jan. 7 | Light freezing rain | -8° /-15° | 0.2 mm | 1 | |
| Jan. 8 |  Partly cloudy | 4° /-11° | 0.9 mm | 2 | |
| Jan. 9 | Overcast | 1° /-3° | 1.3 mm | 1 | |
| Jan. 10 | Cloudy | 2° /-6° | 0 mm | 1 | |
| Jan. 11 | Light freezing rain | 2° /-1° | 1.5 mm | 1 | |
| Jan. 12 | Overcast | -2° /-12° | 0.2 mm | 1 | |
| Jan. 13 | Cloudy | -2° /-14° | 0.1 mm | 1 | |
| Jan. 14 | Light freezing rain | 0° /-6° | 1.1 mm | 1 | |
| Jan. 15 | Cloudy | 5° /-6° | 0 mm | 2 | |
| Jan. 16 |  Sunny | 10° /0° | 0 mm | 4 | |
| Jan. 17 | Light freezing rain | 3° /-7° | 0.3 mm | 1 | |
| Jan. 18 | Light freezing rain | -9° /-17° | 0.3 mm | 1 | |
| Jan. 19 | Sunny | -13° /-22° | 0 mm | 2 | |
| Jan. 20 | Sunny | -16° /-21° | 0 mm | 2 | |
| Jan. 21 | Cloudy | 1° /-20° | 0 mm | 1 | |
| Jan. 22 | Light freezing rain | -3° /-6° | 0.6 mm | 1 | |
| Jan. 23 | Partly cloudy | -2° /-9° | 0.6 mm | 2 | |
| Jan. 24 | Overcast | 0° /-6° | 0 mm | 1 | |
| Jan. 25 | Sunny | -4° /-12° | 0 mm | 2 | |
| Jan. 26 | Sunny | 0° /-15° | 0 mm | 2 | |
| Jan. 27 | Sunny | 7° /-6° | 0 mm | 3 | |
| Jan. 28 | Sunny | 9° /-1° | 0 mm | 3 | |
| Jan. 29 | Sunny | 12° /-1° | 0 mm | 4 | |
| Jan. 30 | Sunny | 9° /0° | 0 mm | 3 | |
| Jan. 31 | Overcast | 7° /0° | 0 mm | 2 | |
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Important Notice
Our weather forecast for Pennington County 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 Pennington County forecast closer to your planned date for the most up-to-date weather information.
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Pennington County in January - FAQ
What are the expected maximum and minimum temperatures in Pennington County during January?
Brace for cold days with temperatures not exceeding -1° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Pennington County during January?
Expect minimal rainfall in Pennington County during January, with a total of 14.5 mm over approximately 12 days. This minimal precipitation is unlikely to significantly impact plans.
Will it snow in Pennington County in January 2026?
Pennington County typically sees 0 cm of snowfall during January.
What are the typical wind conditions in Pennington County during January?
The average wind speed in Pennington County during January is 23 km/h, suggesting breezy to windy conditions, depending on your activities.
January rainfall patterns in Pennington County
Explore the daily rainfall trends and prepare for Pennington Countys January weather 💧
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Where is Pennington County?Get accurate weather forecasts for Pennington County, located at latitude 44.081 and longitude -103.231. Stay updated with localized weather information tailored for Pennington County.
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