Cloudy skies · Tennessee
How cloudy is Chattanooga?
In a typical year, the sky over Chattanooga is mostly cloudy or overcast about 39% of the time, and clear or nearly clear about 47%.
January is the cloudiest month, mostly cloudy about 50% of the time, and August the least cloudy, at about 29%. Across winter, December to February, it’s mostly cloudy about 50% of the time. That makes it the 48th least cloudy sky of the 116 US cities we track.
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The forecast for the next 48 hours doesn’t have the sky mostly cloudy at any point.
Chattanooga is mostly cloudy about 50% of the winter, so Lookout Mountain spends half the season with nothing in particular to look out at.
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 | 39% |
|---|---|
| Clear or nearly clear, all year | 47% |
| Mostly cloudy, December to February | 50% |
| Cloudiest month | January, 50% |
| Least cloudy month | August, 29% |
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
- Medford, Oregon: mostly cloudy about 39% of the time
- Tampa, Florida: mostly cloudy about 39% of the time
- Columbia, South Carolina: mostly cloudy about 38% of the time
More about the weather here
Source: NOAA U.S. Climate Normals, hourly, 1991 to 2020, station USW00013882. Airport sensors see cloud up to about 12,000 feet, so thin high cloud isn’t counted.