Cloudy skies · Illinois
How cloudy is Chicago?
Chicago right now
38°FClear skies
- Today44°F / 37°FClouds
- Tomorrow48°F / 33°FClear skies
- Monday49°F / 32°FClear skies
Sunny, and you're looking at a screen.
Live from OpenWeatherMap. Alerts from the National Weather Service.
In a typical year, the sky over Chicago is mostly cloudy or overcast about 53% of the time, and clear or nearly clear about 33%.
December is the cloudiest month, mostly cloudy about 65% of the time, and August the least cloudy, at about 41%. Across winter, December to February, it’s mostly cloudy about 63% of the time. That makes it the 18th cloudiest sky of the 116 US cities we track.
Last updated
The forecast for the next 48 hours has the sky mostly cloudy about 6% of the time.
Chicago is mostly cloudy about 63% of the winter, so the Bean spends most of December reflecting a very large grey ceiling.
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 | 53% |
|---|---|
| Clear or nearly clear, all year | 33% |
| Mostly cloudy, December to February | 63% |
| Cloudiest month | December, 65% |
| Least cloudy month | August, 41% |
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
- Louisville, Kentucky: mostly cloudy about 53% of the time
- Newark, New Jersey: mostly cloudy about 53% of the time
- New York, New York: mostly cloudy about 53% of the time
More about the weather here
Source: NOAA U.S. Climate Normals, hourly, 1991 to 2020, station USW00094846. Airport sensors see cloud up to about 12,000 feet, so thin high cloud isn’t counted.