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Weather & Climate
Big Sky, Montana, United States
Overview
Climate data and monthly weather averages for Big Sky.
Key Metrics
Annual Avg
3°C
Summer Avg
15.4°C
Winter Avg
-8.4°C
Record High
36.5°C
Record Low
-37.1°C
Annual Precipitation
661.3 mm
Avg Humidity
73%
Summer Humidity
57%
Winter Humidity
93%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 5.7° | -8.5° | -33.4° | 45.6 | 95% | 53 | 37.2 |
| Feb | 9° | -8.1° | -37.1° | 48.4 | 93% | 77 | 33.6 |
| Mar | 16.4° | -3° | -29.6° | 55.2 | 83% | 119 | 34.1 |
| Apr | 22.4° | 1.2° | -19.8° | 77.1 | 74% | 144 | 32.7 |
| May | 27.5° | 6.6° | -11.2° | 82.8 | 70% | 175 | 29.7 |
| Jun | 31.9° | 12° | -4.5° | 79.2 | 66% | 199 | 28.3 |
| Jul | 36.5° | 17.7° | -0.1° | 38.1 | 55% | 222 | 28.8 |
| Aug | 34.2° | 16.4° | -0.1° | 35 | 51% | 188 | 26 |
| Sep | 31° | 10.9° | -6.1° | 44.1 | 56% | 137 | 27.7 |
| Oct | 25.9° | 3.1° | -19.2° | 56.7 | 68% | 89 | 31.2 |
| Nov | 16.9° | -3.2° | -32.9° | 49.5 | 78% | 54 | 36.2 |
| Dec | 7° | -8.6° | -35.3° | 49.6 | 90% | 41 | 39.6 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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