Average monthly snow and rainfall in Sioux City (IA)
The mean monthly precipitation over the year in Sioux City (Iowa), including rain, snow, hail.
- A lot of rain (rainy season) falls in the months: May, June and August.
- Sioux City has dry periods in January, February and November.
- On average, June is the wettest month with 108 mm of precipitation.
- On average, January is the driest month with 13 mm of precipitation.
- The average amount of annual precipitation is 739 mm.
Forecast for Sioux City (IA)
Mon May 20
29°C | 14°C
NW 
18 km/h
18 km/h
almost clear and no rain
Tue May 21
22°C | 11°C
NW 43 km/h
43 km/h6.9 mm
broken clouds and thunder
Wed May 22
23°C | 8°C
W 22 km/h
22 km/h
clear and no rain
