Sioux City, IA Weather & Climate Normals
Sioux City's real weather, in one number
Sioux City, IA scores 47/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 5 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Sioux City's hottest and coldest months
Sioux City's hottest month is Jul, averaging 75°F; its coldest is Jan, averaging 19°F, a 55.3°F swing across the year, one of the widest gaps in this dataset.
Rain and snow in Sioux City
Over a typical year, Sioux City sees about 30.28in of precipitation a year across roughly 0 days with measurable rain or snow. That station has no snowfall reading, so none is shown rather than assumed.
Where Sioux City ranks
Sioux City ranks 2547 of 4876 US cities in this dataset for comfort score, and 5 of 85 within IA. About 86,875 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from SIOUX CITY ANG, IA US, 6.9 miles from Sioux City, not a prediction for any specific day.
More on how this is worked out
Why some cities show no snow or rain figure · How the comfort score is calculated