Average annual temperature is 11.3 °C
Absolute maximum temperature: 37.6 °C
Absolute minimum temperature: -25.9 °C
Number of sunny days: 211 days
Number of rainy days: 140 days
Number of snow days: 14 days
Look at detailed online map of Iowa
* Weather data for Iowa United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 12.8 | 12.4 | 23.3 | 27.2 | 31.1 | 32.0 | 34.0 | 37.6 | 35.1 | 31.6 | 18.2 | 13.0 |
| Average daytime temperature (°C) | 0.3 | 3.7 | 7.4 | 17.4 | 24.9 | 28.9 | 28.5 | 28.8 | 26.6 | 17.6 | 10.8 | 6.5 |
| Average temperature (°C) | -3.8 | -2.2 | 1.6 | 10.3 | 18.1 | 22.9 | 23.0 | 23.8 | 20.6 | 12.8 | 5.2 | 2.1 |
| Average night temperature (°C) | -6.8 | -6.7 | -2.7 | 4.7 | 11.7 | 17.2 | 17.9 | 19.0 | 15.5 | 8.7 | 0.9 | -1.0 |
| Absolute minimum temperature (°C) | -25.9 | -25.5 | -12.9 | -4.6 | 1.6 | 8.4 | 11.9 | 12.4 | 9.9 | -4.4 | -12.1 | -6.6 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 13.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.5 | 10.6 | 11.9 | 13.4 | 14.6 | 15.2 | 14.9 | 13.8 | 12.5 | 11.1 | 9.8 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.7 | 7.0 | 7.5 | 10.0 | 11.3 | 12.3 | 12.3 | 11.4 | 10.4 | 7.1 | 7.3 | 4.7 |
| Precipitation (mm) | 66 | 34 | 49 | 48 | 90 | 56 | 102 | 62 | 57 | 123 | 10 | 38 |
| Sunny days | 16 | 18 | 15 | 17 | 20 | 17 | 16 | 16 | 15 | 17 | 23 | 21 |
| Rainy days | 8 | 10 | 12 | 12 | 11 | 13 | 15 | 15 | 15 | 13 | 7 | 9 |
| Snow days | 7 | 0 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
The best time to visit Iowa during the most sunny months:
The largest precipitation sum in Iowa is at