Historical Weather Records & Monthly Climate for Great Falls, MT
All-Time High
105°F
All-Time Low
-46°F
Max Daily Snow
11.8"
Max Wind Gust
70 mph
Monthly Climate Averages
Based on 30 years of historical data (1994 - 2023)
| Month | High (°F) | Low (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|
| January | 34° | 18° | 0.78" | 5.21" |
| February | 35° | 18° | 0.8" | 5.5" |
| March | 45° | 25° | 0.98" | 5.28" |
| April | 54° | 33° | 1.98" | 6.29" |
| May | 64° | 42° | 2.48" | 1.39" |
| June | 73° | 51° | 2.85" | 0.25" |
| July | 84° | 59° | 0.77" | 0 |
| August | 83° | 58° | 1.04" | 0 |
| September | 72° | 49° | 1.44" | 0.35" |
| October | 57° | 38° | 1.32" | 2.9" |
| November | 43° | 28° | 0.84" | 4.41" |
| December | 34° | 19° | 0.84" | 5.58" |
Historical Weather Extremes
Based on 80+ years of archive data (1940 - 2024)
🔥
Longest Heatwave
13 Days
1985
Consecutive days ≥ 90°F
🧊
Deepest Freeze
32 Days
2019
Consecutive days ≤ 32°F
🏜️
Longest Drought
39 Days
2017
Consecutive days w/o rain
☔
Wettest Month
6.88"
June 1953
Most rainfall in one month
⛄
Snowiest Month
23.92"
May 1982
Most snowfall in one month
More Historical Climate Data for Cities in
MT