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Great Falls climate guide
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 |
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 |
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 climate for Great Falls
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV Index (Maximum) |  1 |
2 |
 3 |
5 |
 6 |
 8 |
8 |
7 |
5 |
3 |
1 |
1 |
| 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
What's the climate like in Great Falls?
Great Falls has a cold semi arid climate with warm summers.
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.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Metric (°C / mm) | Imperial (°F / inches)
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