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Weather & Climate
Gillette, Wyoming, United States
Overview
Climate data and monthly weather averages for Gillette.
Key Metrics
Annual Avg
8.6°C
Summer Avg
21.8°C
Winter Avg
-3.3°C
Record High
41.8°C
Record Low
-24.8°C
Annual Precipitation
386.6 mm
Avg Humidity
59%
Summer Humidity
48%
Winter Humidity
70%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 17.5° | -3.3° | -24.8° | 12.7 | 71% | 57 | 61.1 |
| Feb | 19.3° | -3° | -24.4° | 16.5 | 68% | 75 | 63.2 |
| Mar | 26.4° | 2.5° | -24.8° | 23.9 | 62% | 120 | 60.5 |
| Apr | 29.6° | 6.8° | -12° | 45 | 59% | 150 | 62.3 |
| May | 34.9° | 12.3° | -5.3° | 79.4 | 58% | 187 | 61.8 |
| Jun | 40.5° | 18.8° | 0.7° | 53.4 | 53% | 212 | 55.3 |
| Jul | 41.8° | 24.1° | 6.2° | 38.8 | 46% | 224 | 49.5 |
| Aug | 40.5° | 22.4° | 3.8° | 29.1 | 45% | 193 | 66.1 |
| Sep | 38.5° | 16.5° | -2.8° | 29.4 | 47% | 142 | 54.4 |
| Oct | 32.8° | 7.7° | -14.8° | 31.9 | 59% | 97 | 55.8 |
| Nov | 23.8° | 1.6° | -20.3° | 13.5 | 63% | 62 | 66.3 |
| Dec | 16.4° | -3.6° | -23.6° | 13 | 71% | 47 | 63.1 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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