Average annual temperature is 10.0 °C
Absolute maximum temperature: 37.4 °C
Absolute minimum temperature: -24.6 °C
Number of sunny days: 178 days
Number of rainy days: 162 days
Number of snow days: 25 days
Look at detailed online map of City of West Allis
* Weather data for City of West Allis 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) | 7.7 | 9.6 | 20.4 | 26.4 | 29.4 | 32.8 | 32.8 | 37.4 | 34.3 | 28.3 | 19.2 | 13.2 |
| Average daytime temperature (°C) | 1.6 | 3.2 | 5.3 | 14.7 | 18.7 | 24.8 | 27.7 | 26.4 | 23.2 | 16.3 | 8.7 | 5.4 |
| Average temperature (°C) | -1.9 | -1.7 | 0.9 | 8.6 | 13.1 | 19.0 | 22.4 | 21.6 | 19.0 | 12.1 | 4.2 | 2.4 |
| Average night temperature (°C) | -4.4 | -5.7 | -2.7 | 3.6 | 8.1 | 14.0 | 17.9 | 17.7 | 15.5 | 8.6 | 0.7 | 0.0 |
| Absolute minimum temperature (°C) | -24.6 | -22.5 | -12.6 | -2.8 | 0.8 | 6.8 | 13.1 | 11.8 | 8.8 | -2.5 | -11.6 | -7.8 |
| 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) | 9.4 | 10.5 | 11.9 | 13.4 | 14.7 | 15.3 | 15.0 | 13.9 | 12.5 | 11.0 | 9.8 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 3.8 | 7.1 | 7.0 | 8.5 | 10.8 | 12.1 | 12.1 | 11.2 | 8.9 | 6.8 | 6.6 | 3.9 |
| Precipitation (mm) | 48 | 102 | 105 | 113 | 37 | 41 | 120 | 100 | 99 | 111 | 52 | 61 |
| Sunny days | 11 | 16 | 10 | 15 | 21 | 22 | 9 | 14 | 12 | 12 | 21 | 15 |
| Rainy days | 12 | 8 | 13 | 15 | 10 | 8 | 22 | 17 | 18 | 18 | 7 | 14 |
| Snow days | 8 | 4 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 2 |
The best time to visit City of West Allis during the most sunny months:
Months with the longest average daylight duration in City of West Allis:
The largest precipitation sum in City of West Allis is at