Cloudy skies · Missouri
How cloudy is St. Louis?
St. Louis right now
43°FClear skies
- Today44°F / 37°FClear skies
- Tomorrow51°F / 28°FClear skies
- Monday52°F / 35°FClear skies
Fresh, the way a fridge is fresh.
Live from OpenWeatherMap. Alerts from the National Weather Service.
In a typical year, the sky over St. Louis is mostly cloudy or overcast about 50% of the time, and clear or nearly clear about 35%.
January is the cloudiest month, mostly cloudy about 60% of the time, and August the least cloudy, at about 37%. Across winter, December to February, it’s mostly cloudy about 59% of the time. That makes it the 29th cloudiest sky of the 116 US cities we track.
Last updated
The forecast for the next 48 hours doesn’t have the sky mostly cloudy at any point.
St. Louis is mostly cloudy about 59% of the winter, so the Gateway Arch spends a lot of the season reflecting nothing in particular.
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 | 50% |
|---|---|
| Clear or nearly clear, all year | 35% |
| Mostly cloudy, December to February | 59% |
| Cloudiest month | January, 60% |
| Least cloudy month | August, 37% |
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
- Rockford, Illinois: mostly cloudy about 50% of the time
- Nashville, Tennessee: mostly cloudy about 50% of the time
- Philadelphia, Pennsylvania: mostly cloudy about 50% of the time
More about the weather here
Source: NOAA U.S. Climate Normals, hourly, 1991 to 2020, station USW00013994. Airport sensors see cloud up to about 12,000 feet, so thin high cloud isn’t counted.