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Weather & Climate
Pennington County, South Dakota, United States
Overview
Climate data and monthly weather averages for Pennington County.
Key Metrics
Annual Avg
9.6°C
Summer Avg
22.7°C
Winter Avg
-2.3°C
Record High
44.2°C
Record Low
-24.6°C
Annual Precipitation
449.6 mm
Avg Humidity
58%
Summer Humidity
52%
Winter Humidity
66%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 21.9° | -2.2° | -22.5° | 8.7 | 67% | 61 | 58.3 |
| Feb | 22.5° | -2.4° | -22.2° | 13.7 | 65% | 82 | 61.9 |
| Mar | 28° | 3.2° | -22.4° | 24.2 | 60% | 124 | 68.5 |
| Apr | 32.3° | 7.9° | -14.7° | 51.6 | 58% | 152 | 66.7 |
| May | 36.6° | 13.6° | -5.1° | 86.8 | 57% | 187 | 58.8 |
| Jun | 42.9° | 20.4° | 2.5° | 68.1 | 54% | 206 | 54.9 |
| Jul | 44.2° | 24.8° | 8.6° | 55.5 | 50% | 218 | 44.3 |
| Aug | 41.8° | 22.9° | 6.5° | 48.4 | 51% | 185 | 56.3 |
| Sep | 39.3° | 17.5° | -1.8° | 37.5 | 52% | 140 | 47 |
| Oct | 33.4° | 8.8° | -17.4° | 32.6 | 59% | 96 | 58.3 |
| Nov | 25.7° | 3° | -16.6° | 11.7 | 61% | 63 | 62.6 |
| Dec | 19.1° | -2.2° | -24.6° | 10.8 | 67% | 50 | 60.7 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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