Cloudy skies · Montana
How cloudy is Helena?
In a typical year, the sky over Helena is mostly cloudy or overcast about 34% of the time, and clear or nearly clear about 60%.
January is the cloudiest month, mostly cloudy about 45% of the time, and July the least cloudy, at about 14%. Across winter, December to February, it’s mostly cloudy about 44% of the time. That makes it the 30th least cloudy sky of the 116 US cities we track.
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The forecast for the next 48 hours has the sky mostly cloudy about 38% of the time.
Helena is mostly cloudy about 34% of the time, and July clears to about 14%, so the mountains get a clear stage most summer days.
Live 48-hour forecast from OpenWeatherMap, refreshed about every half hour. Alerts from the National Weather Service.
The sky at a glance
| Mostly cloudy or overcast, all year | 34% |
|---|---|
| Clear or nearly clear, all year | 60% |
| Mostly cloudy, December to February | 44% |
| Cloudiest month | January, 45% |
| Least cloudy month | July, 14% |
Shares of hours across a typical year. Mostly cloudy means at least five eighths of the sky covered; clear or nearly clear means two eighths or less.
Cities with about the same sky
- Los Angeles, California: mostly cloudy about 34% of the time
- Charleston, South Carolina: mostly cloudy about 34% of the time
- Bismarck, North Dakota: mostly cloudy about 34% of the time
More about the weather here
Source: NOAA U.S. Climate Normals, hourly, 1991 to 2020, station USW00024144. Airport sensors see cloud up to about 12,000 feet, so thin high cloud isn’t counted.