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Weather & Climate
Madison County, Montana, United States
Overview
Climate data and monthly weather averages for Madison County.
Key Metrics
Annual Avg
3.8°C
Summer Avg
16.4°C
Winter Avg
-8.1°C
Record High
36.8°C
Record Low
-34.7°C
Annual Precipitation
571.3 mm
Avg Humidity
70%
Summer Humidity
54%
Winter Humidity
88%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 6.7° | -8.5° | -34.7° | 36.6 | 91% | 53 | 44.5 |
| Feb | 10.3° | -7.6° | -33.8° | 38.6 | 87% | 77 | 42 |
| Mar | 17.5° | -1.9° | -29.4° | 46.2 | 76% | 119 | 47.1 |
| Apr | 23.5° | 2.3° | -17.6° | 66 | 68% | 144 | 46.8 |
| May | 29.4° | 7.8° | -9.7° | 73.2 | 65% | 175 | 41.3 |
| Jun | 32.9° | 13.2° | -3.2° | 73.8 | 61% | 199 | 44.1 |
| Jul | 36.8° | 18.8° | 1.1° | 33.5 | 52% | 222 | 42.4 |
| Aug | 34.5° | 17.3° | 0.1° | 32.9 | 50% | 188 | 35.6 |
| Sep | 31.6° | 11.7° | -5.6° | 41.1 | 55% | 137 | 38.1 |
| Oct | 25.8° | 3.7° | -18.3° | 46.8 | 66% | 89 | 42.6 |
| Nov | 17.3° | -2.7° | -33.2° | 41.1 | 76% | 54 | 49.1 |
| Dec | 7.4° | -8.3° | -34.2° | 41.5 | 87% | 41 | 54 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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