Weather in Helena: December
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Average day temperature: | 31.0°F |
| Average night temperature: | 22.1°F | |
 |
Number of sunny days: | 11 days |
| Day length: | 8.6 - 8.8 hours | |
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Number of rainy days: | 0 days |
| Precipitation totals: | 0.2 in. | |
| more information | ||
14 days
forecast
forecast
| Helena |
weather in
January
January
| Helena |
Air temperature in December, °F
Show year:
2025
2024
2023
The highest day temperature during December of 2025 was 52°F. At the same time the lowest night temperature was 1°F. Daily and nightly averages during December were 38.8°F and 30.9°F.
Sunny, partly cloudy and cloudy days
Number of sunny, partly cloudy and cloudy days in December is almost equal.
Precipitation total in December, in.
Precipitation total value in Helena in December is 0.2 in. Other months of the year show relatively similar values.
Wind speed in December, mph
The average wind speed value in December is 4.8 mph It makes December one of the least windy months of the year.
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in December is: 4.9.
Best time for vacation in Helena
Helena on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Helena
Local time: 10:42
October 29, thursday
1200
45°F
SW
2 mph
2 mph
1500
50°F
SW
3 mph
3 mph
1800
41°F
S
5 mph
5 mph
2100
32°F
SE
4 mph
4 mph
October 30, friday
0000
30°F
SE
2 mph
2 mph
0300
28°F
SE
2 mph
2 mph
0600
30°F
SE
2 mph
2 mph
0900
32°F
SE
1 mph
1 mph
