Average annual temperature is 10.1 °C
Absolute maximum temperature: 37.1 °C
Absolute minimum temperature: -27.5 °C
Number of sunny days: 198 days
Number of rainy days: 141 days
Number of snow days: 26 days
Look at detailed online map of City of Onalaska
* Weather data for City of Onalaska 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) | 5.0 | 8.5 | 13.3 | 26.6 | 31.2 | 32.1 | 32.6 | 37.1 | 34.9 | 29.9 | 17.2 | 12.6 |
| Average daytime temperature (°C) | -0.7 | 2.3 | 6.2 | 14.4 | 23.3 | 28.3 | 28.0 | 28.4 | 25.2 | 15.8 | 8.4 | 5.5 |
| Average temperature (°C) | -4.8 | -3.6 | 0.5 | 8.2 | 16.5 | 22.2 | 22.4 | 22.8 | 19.7 | 11.6 | 3.5 | 1.2 |
| Average night temperature (°C) | -8.4 | -8.0 | -3.6 | 3.6 | 10.7 | 16.7 | 17.2 | 18.1 | 15.5 | 8.3 | 0.0 | -1.5 |
| Absolute minimum temperature (°C) | -27.5 | -24.9 | -17.6 | -5.6 | 1.8 | 8.4 | 12.7 | 12.9 | 9.7 | -4.0 | -12.3 | -8.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.3 | 10.5 | 11.9 | 13.4 | 14.7 | 15.4 | 15.1 | 14.0 | 12.5 | 11.0 | 9.7 | 9.0 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 4.2 | 6.2 | 7.0 | 8.2 | 11.5 | 12.8 | 12.1 | 11.4 | 9.0 | 6.8 | 6.6 | 4.2 |
| Precipitation (mm) | 49 | 45 | 82 | 96 | 49 | 46 | 51 | 97 | 169 | 106 | 6 | 32 |
| Sunny days | 15 | 15 | 16 | 14 | 18 | 19 | 15 | 15 | 13 | 15 | 24 | 19 |
| Rainy days | 7 | 8 | 10 | 14 | 13 | 11 | 16 | 16 | 17 | 13 | 6 | 10 |
| Snow days | 9 | 5 | 5 | 2 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 2 |
The best time to visit City of Onalaska during the most sunny months:
Months with the longest average daylight duration in City of Onalaska:
The largest precipitation sum in City of Onalaska is at