Weather in Helena: September
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Average day temperature: | 69.3°F |
| Average night temperature: | 50.5°F | |
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Number of sunny days: | 20 days |
| Day length: | 11.7 - 13.3 hours | |
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Number of rainy days: | 1 day |
| Precipitation totals: | 0.5 in. | |
| more information | ||
14 days
forecast
forecast
| Helena |
weather in
October
October
| Helena |
Air temperature in September, °F
Show year:
2023
2022
2021
The highest day temperature during September of 2023 was 78°F. At the same time the lowest night temperature was 41°F. Day and night temperature averages during September were 64.8°F and 52.0°F.
Sunny, partly cloudy and cloudy days
Mostly all days in September are sunny but cloudy days are also possible.
Precipitation total in September, in.
Precipitation total value in Helena in September is 0.5 in. Other months of the year show relatively similar values.
Wind speed in September, mph
The average wind speed value in September is 4.7 mph
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 September is: 8.9.
Best time for vacation in Helena
Helena on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Helena
Local time: 12:44
May 18, saturday
1500
59°F
E
18 mph
18 mph
1800
57°F
E
16 mph
16 mph
2100
48°F
NE
3 mph
3 mph
May 19, sunday
0000
43°F
E
3 mph
3 mph
0300
41°F
SE
4 mph
4 mph
0600
37°F
E
5 mph
5 mph
0900
41°F
SE
3 mph
3 mph
1200
43°F
SE
4 mph
4 mph
