Weather Averages for Helena, MT
7-day Forecast / 10-day Forecast
| Monday |
|
High: 36°F
Low: 23°F |
Partly Cloudy
|
|
| Tuesday |
|
High: 30°F
Low: 24°F |
Sunny
|
|
| Wednesday |
|
|
High: 30°F
Low: 14°F |
Sunny
|
|
| Thursday |
|
|
High: 32°F
Low: 16°F |
Sunny
|
|
| Friday |
|
High: 38°F
Low: 15°F |
Patchy light snow
|
|
Average temperature
over 49 years |
°F |
41 |
19 |
24 |
30 |
39 |
48 |
55 |
62 |
62 |
53 |
43 |
30 |
23 |
Average high temperature
over 49 years |
°F |
53 |
30 |
35 |
41 |
51 |
62 |
69 |
79 |
78 |
67 |
55 |
39 |
32 |
Average low temperature
over 49 years |
°F |
29 |
11 |
16 |
19 |
27 |
36 |
42 |
48 |
46 |
39 |
31 |
20 |
14 |
Average precipitation
over 49 years |
in |
16.2 |
1.0 |
0.7 |
0.9 |
1.4 |
2.3 |
2.3 |
1.5 |
1.3 |
1.4 |
1.1 |
1.1 |
1.1 |
Average snowfall
over 49 years |
in |
59.6 |
11.7 |
8.2 |
9.8 |
6.2 |
1.4 |
0.2 |
- |
0.2 |
0.8 |
2.2 |
6.8 |
12.2 |
Average snow cover
over 49 years |
in |
1.0 |
4.0 |
3.0 |
2.0 |
- |
- |
- |
- |
- |
- |
- |
1.0 |
3.0 |
Heating degree days
over 30 years |
days |
8594 |
1367 |
1081 |
1045 |
738 |
496 |
249 |
89 |
137 |
379 |
654 |
1032 |
1327 |
Cooling degree days
over 30 years |
days |
183 |
- |
- |
- |
- |
- |
15 |
68 |
78 |
22 |
- |
- |
- |
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