Average annual temperature is 11.6 °C
Absolute maximum temperature: 37.5 °C
Absolute minimum temperature: -24.8 °C
Number of sunny days: 227 days
Number of rainy days: 116 days
Number of snow days: 22 days
Look at detailed online map of Onawa
* Weather data for Onawa 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) | 8.3 | 14.2 | 21.3 | 30.0 | 30.9 | 33.5 | 35.7 | 37.5 | 34.8 | 32.0 | 19.4 | 12.3 |
| Average daytime temperature (°C) | 0.0 | 4.3 | 8.2 | 18.1 | 25.7 | 30.1 | 29.7 | 30.0 | 27.4 | 18.0 | 11.7 | 5.5 |
| Average temperature (°C) | -4.3 | -2.4 | 1.5 | 10.9 | 19.0 | 24.1 | 23.9 | 24.4 | 21.4 | 12.7 | 5.7 | 1.0 |
| Average night temperature (°C) | -7.8 | -7.0 | -3.1 | 5.0 | 12.9 | 18.1 | 18.5 | 19.5 | 16.5 | 8.5 | 1.1 | -2.6 |
| Absolute minimum temperature (°C) | -24.8 | -23.7 | -12.0 | -4.2 | 2.6 | 10.5 | 11.3 | 12.6 | 10.7 | -5.6 | -8.3 | -7.7 |
| 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) | 4.5 | 6.9 | 7.9 | 9.4 | 11.3 | 13.0 | 11.8 | 11.4 | 9.9 | 7.7 | 7.1 | 5.2 |
| Precipitation (mm) | 62 | 41 | 30 | 32 | 47 | 46 | 92 | 65 | 65 | 127 | 5 | 68 |
| Sunny days | 20 | 18 | 19 | 21 | 17 | 12 | 16 | 21 | 20 | 15 | 25 | 23 |
| Rainy days | 4 | 5 | 10 | 8 | 14 | 18 | 15 | 10 | 10 | 15 | 3 | 4 |
| Snow days | 7 | 5 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 4 |
The best time to visit Onawa during the most sunny months:
The largest precipitation sum in Onawa is at