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 |
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| 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 |
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| 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 |
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| 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