Weather in Helena: May
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Average day temperature: | 57.1°F |
| Average night temperature: | 41.9°F | |
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Number of sunny days: | 12 days |
| Day length: | 14.4 - 15.6 hours | |
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Number of rainy days: | 3 days |
| Precipitation totals: | 1.4 in. | |
| more information | ||
14 days
forecast
forecast
| Helena |
weather in
June
June
| Helena |
Air temperature in May, °F
Show year:
2025
2024
2023
The highest day temperature during May of 2025 was 78°F. At the same time the lowest night temperature was 32°F. Daily and nightly averages during May were 58.9°F and 42.7°F.
Sunny, partly cloudy and cloudy days
Number of sunny, partly cloudy and cloudy days in May is almost equal.
Precipitation total in May, in.
Precipitation total value in Helena in May is 1.4 in. Other months of the year show relatively similar values.
Wind speed in May, mph
The average wind speed value in May is 5.9 mph It makes May one of the most 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 May is: 8.6.
Best time for vacation in Helena
Helena on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Helena
Local time: 01:30
December 05, friday
0300
34°F
SE
1 mph
1 mph
0600
27°F
NE
1 mph
1 mph
0900
19°F
NE
4 mph
4 mph
1200
30°F
N
2 mph
2 mph
1500
37°F
NW
2 mph
2 mph
1800
34°F
N
3 mph
3 mph
2100
30°F
N
4 mph
4 mph
December 06, saturday
0000
32°F
E
9 mph
9 mph
