Cloudy skies · Iowa
How cloudy is Sioux City?
Sioux City right now
36°FClear skies
- Today42°F / 30°FClear skies
- Tomorrow51°F / 27°FClear skies
- Monday54°F / 32°FClear skies
Clear skies, zero excuses.
Live from OpenWeatherMap. Alerts from the National Weather Service.
In a typical year, the sky over Sioux City is mostly cloudy or overcast about 33% of the time, and clear or nearly clear about 63%.
January is the cloudiest month, mostly cloudy about 42% of the time, and July the least cloudy, at about 19%. Across winter, December to February, it’s mostly cloudy about 41% of the time. That makes it the 25th least cloudy 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.
Sioux City is clear or nearly clear about 63% of the time, so the sky over the three-state corner is mostly wide open.
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 | 33% |
|---|---|
| Clear or nearly clear, all year | 63% |
| Mostly cloudy, December to February | 41% |
| Cloudiest month | January, 42% |
| Least cloudy month | July, 19% |
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
- Springfield, Illinois: mostly cloudy about 33% of the time
- Savannah, Georgia: mostly cloudy about 32% of the time
- Tallahassee, Florida: mostly cloudy about 33% of the time
More about the weather here
Source: NOAA U.S. Climate Normals, hourly, 1991 to 2020, station USW00014943. Airport sensors see cloud up to about 12,000 feet, so thin high cloud isn’t counted.