Average annual temperature is 10.6 °C
Absolute maximum temperature: 31.8 °C
Absolute minimum temperature: -13.9 °C
Number of sunny days: 138 days
Number of rainy days: 202 days
Number of snow days: 25 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) | 14.7 | 18.3 | 17.3 | 27.1 | 30.5 | 31.8 | 30.7 | 31.6 | 31.0 | 26.4 | 15.0 | 14.2 |
| Average daytime temperature (°C) | 5.3 | 8.4 | 7.5 | 17.0 | 20.6 | 23.7 | 27.1 | 25.4 | 22.4 | 16.2 | 9.0 | 6.9 |
| Average temperature (°C) | 1.7 | 1.9 | 2.2 | 10.2 | 14.0 | 18.0 | 21.6 | 20.0 | 17.1 | 11.8 | 4.3 | 3.4 |
| Average night temperature (°C) | -1.1 | -2.8 | -2.0 | 4.5 | 7.5 | 12.8 | 16.7 | 15.8 | 12.7 | 8.1 | 0.6 | 0.6 |
| Absolute minimum temperature (°C) | -7.5 | -13.9 | -8.6 | -4.2 | 1.0 | 7.7 | 12.5 | 10.7 | 7.7 | 0.0 | -8.0 | -5.6 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 2.6 | 6.2 | 5.9 | 8.1 | 10.6 | 10.6 | 11.2 | 10.5 | 8.5 | 5.7 | 6.6 | 3.5 |
| Precipitation (mm) | 124 | 81 | 108 | 78 | 54 | 124 | 93 | 151 | 69 | 110 | 54 | 88 |
| Sunny days | 6 | 10 | 6 | 12 | 21 | 9 | 7 | 9 | 14 | 15 | 18 | 11 |
| Rainy days | 15 | 16 | 18 | 18 | 10 | 21 | 24 | 22 | 16 | 16 | 10 | 16 |
| Snow days | 10 | 2 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 4 |
The best time to visit Iowa during the most sunny months:
The largest precipitation sum in Iowa is at