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Helena weather by month
Check out Helena weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.
Temperature in Helena (°F)
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Max temperature (daytime) | 30 |
37 |
43 |
54 |
64 |
73 |
82 |
82 |
68 |
57 |
41 |
32 |
Min temperature (night-time) | 9 |
14 |
21 |
28 |
37 |
46 |
50 |
48 |
39 |
30 |
19 |
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 Helena
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 |
7 |
8 |
9 |
8 |
5 |
3 |
1 |
1 |
Rainfall in Helena
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Number of days with some rain | 9 |
7 |
10 |
9 |
11 |
10 |
7 |
8 |
7 |
6 |
8 |
9 |
Average monthly rainfall (inches) | 0.7 |
0.5 |
0.8 |
1.1 |
2.0 |
2.2 |
1.3 |
1.3 |
1.2 |
0.7 |
0.6 |
0.6 |
More about Helena
Helena by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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The climate guide for Montana (Helena) 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 Helena?
Helena has a cold semi arid climate with warm summers.
Metric (°C) | Imperial (°F)
More about the USA
Compare Helena with the USA
Below the Helena chart shows average maximum daytime temperature for Helena, Montana, USA and the USA (Washington).
Maximum daytime temperature (°F)
Metric (°C) | Imperial (°F)
Compare more Helena weather >>
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