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Weather & Climate
Powell County, Montana, United States
Overview
Climate data and monthly weather averages for Powell County.
Key Metrics
Annual Avg
3.5°C
Summer Avg
15.4°C
Winter Avg
-7.6°C
Record High
37.9°C
Record Low
-37.5°C
Annual Precipitation
651.2 mm
Avg Humidity
77%
Summer Humidity
60%
Winter Humidity
95%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 7.1° | -7.6° | -32.1° | 56.4 | 95% | 47 | 28 |
| Feb | 9.2° | -7.5° | -37.5° | 53.2 | 95% | 70 | 28.2 |
| Mar | 20.1° | -2.7° | -31.7° | 58.6 | 89% | 114 | 28.9 |
| Apr | 22.9° | 1.8° | -17.3° | 57.9 | 78% | 145 | 27.9 |
| May | 27.6° | 7.3° | -9.2° | 70.7 | 73% | 177 | 28 |
| Jun | 34.5° | 11.8° | -3.9° | 79.2 | 70% | 195 | 22.2 |
| Jul | 37.9° | 17.6° | 0.7° | 30.1 | 57% | 225 | 21.6 |
| Aug | 35.3° | 16.9° | 0.1° | 37.8 | 52% | 187 | 22.6 |
| Sep | 31.2° | 11.2° | -7.8° | 40.2 | 59% | 134 | 22.9 |
| Oct | 26.9° | 3.5° | -20.6° | 51.8 | 72% | 86 | 27 |
| Nov | 16.3° | -2.9° | -31.9° | 56.1 | 86% | 49 | 30.2 |
| Dec | 5.6° | -7.8° | -35.4° | 59.2 | 95% | 36 | 27.4 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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