Climate for Great Falls, Montana
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Average Temperatures for Great Falls
| Month | Low | High |
|---|---|---|
| Jan | 11.3°F | 32.1°F |
| Feb | 15.1°F | 37.7°F |
| Mar | 21.5°F | 45.3°F |
| Apr | 29.7°F | 55.6°F |
| May | 38.3°F | 64.7°F |
| Jun | 46.0°F | 73.9°F |
| Jul | 50.4°F | 82.0°F |
| Aug | 49.9°F | 81.2°F |
| Sept | 41.2°F | 69.6°F |
| Oct | 33.0°F | 58.0°F |
| Nov | 22.5°F | 42.1°F |
| Dec | 14.4°F | 34.2°F |
Great Falls's coldest month is January when the average temperature overnight is 11.3°F. In July, the warmest month, the average day time temperature rises to 82.0°F.
Average Rainfall for Great Falls
| Month | Precipitation |
|---|---|
| Jan | 0.68in. |
| Feb | 0.51in. |
| Mar | 1.01in. |
| Apr | 1.40in. |
| May | 2.53in. |
| Jun | 2.24in. |
| Jul | 1.45in. |
| Aug | 1.65in. |
| Sept | 1.23in. |
| Oct | 0.93in. |
| Nov | 0.59in. |
| Dec | 0.67in. |
The driest month in Great Falls is February with 0.51 inches of precipitation, and with 2.53 inches May is the wettest month.