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Great Falls weather by month
Check out Great Falls weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.
Temperature in Great Falls (°C)
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Max temperature (daytime) | -2 |
3 |
6 |
13 |
18 |
23 |
28 |
28 |
21 |
15 |
7 |
0 |
Min temperature (night-time) | -12 |
-8 |
-6 |
0 |
5 |
9 |
12 |
11 |
6 |
2 |
-5 |
-10 |
Heat & Humidity | 0 |
0 |
0 |
0 |
0 |
0 |
L |
L |
0 |
0 |
0 |
0 |
Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme
Sunshine & Daylight in Great Falls
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Daily hours of sunshine | ||||||||||||
Daily hours of daylight | 9 |
10 |
12 |
14 |
15 |
16 |
15 |
14 |
13 |
11 |
9 |
9 |
UV Index (Maximum) | 1 |
2 |
3 |
5 |
6 |
8 |
8 |
7 |
5 |
3 |
1 |
1 |
Rainfall in Great Falls
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Number of days with some rain | 9 |
7 |
9 |
9 |
12 |
11 |
7 |
8 |
7 |
5 |
6 |
9 |
Average monthly rainfall (mm) | 20 |
14 |
23 |
31 |
63 |
71 |
34 |
36 |
26 |
19 |
16 |
18 |
More about Great Falls
Great Falls by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Montana
The climate guide for Montana (Great Falls) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
What's the climate like in Great Falls?
Great Falls has a cold semi arid climate with warm summers.
Metric (°C / mm) | Imperial (°F / inches)
More about the USA
Compare Great Falls with the USA
Below the Great Falls chart shows average maximum daytime temperature for Great Falls, Montana, USA and the USA (Washington).
Maximum daytime temperature (°C)
Metric (°C / mm) | Imperial (°F / inches)
Compare more Great Falls weather >>
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