Sioux City

The tables below display average monthly climate and weather indicators in Sioux City Iowa. Temperature by: Fahrenheit / Centigrade Sioux City Temperature Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Avg. Temperature 17.7 23.6 35.8 50.2 61.6 70.8 75.7 72.8 63.4 51.8 36.4 21.8 48.5 Avg. Max Temperature 27.6 33.2 45.8 62.2 73.2 82.1 86.5 83.5 74.9 64.0 46.4 30.9 59.2 Avg. Min Temperature 7.7 13.9 25.7 38.3 50.0 59.6 64.8 62.0 51.9 39.6 26.4 12.7 37.7 Days with Max Temp of 90 F or Higher 0.0 0.0 < 0.5 0.0 1.0 5.0 9.0 6.0 2.0 < 0.5 0.0 0.0 24.0 Days with Min Temp Below Freezing 31.0 27.0 23.0 9.0 1.0 0.0 0.0 0.0 1.0 7.0 23.0 30.0 151     Sioux City Heating and Cooling Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Heating Degree Days 1466 1159 905 444 171 19.0 0.0 12.0 103 417 858 1339 6893 Cooling Degree Days 0.0 0.0 0.0 0.0 65.0 193 332 254 55.0 8.0 0.0 0.0 907     Sioux City Precipitation Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Precipitation (inches) 0.6 0.7 2.0 2.3 3.7 3.7 3.3 3.0 2.9 1.9 1.1 0.8 25.9 Days with Precipitation 0.01 inch or More 7.0 6.0 9.0 10.0 11.0 11.0 9.0 9.0 8.0 6.0 6.0 7.0 99.0 Monthly Snowfall (inches) 6.2 5.7 7.4 1.5 0.1 < 0.05 < 0.05 0.0 0.0 0.7 3.8 6.1 31.5     Other Sioux City Weather Indicators Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Average Wind Speed 11.4 11.2 12.3 13.2 11.8 10.7 9.2 9.1 9.9 10.5 11.4 11.0 11.0 Clear Days 8.0 7.0 7.0 7.0 7.0 8.0 11.0 12.0 12.0 12.0 7.0 7.0 104 Partly Cloudy Days 8.0 7.0 8.0 9.0 9.0 11.0 12.0 11.0 8.0 8.0 7.0 7.0 104 Cloudy Days 15.0 14.0 17.0 15.0 15.0 11.0 8.0 9.0 11.0 12.0 16.0 16.0 157 Percent of Possible Sunshine 57.0 56.0 57.0 59.0 61.0 67.0 73.0 70.0 66.0 63.0 51.0 50.0 61.0 Avg. Relative Humidity 58.5 75.0 74.5 71.0 66.5 69.0 72.5 74.5 75.0 70.5 69.0 73.5 77.0

Weather information for other cities in Iowa • Des Moines Weather • Dubuque Weather • Waterloo Weather