Average annual temperature is 13.7 °C
Absolute maximum temperature: 43.4 °C
Absolute minimum temperature: -8.9 °C
Number of sunny days: 252 days
Number of rainy days: 110 days
Number of snow days: 3 days
Look at detailed online map of City of West Richland
* Weather data for City of West Richland 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) | 12.7 | 13.8 | 17.5 | 31.6 | 37.9 | 37.6 | 40.1 | 43.4 | 33.0 | 27.2 | 16.6 | 13.4 |
| Average daytime temperature (°C) | 6.1 | 8.5 | 12.5 | 18.1 | 29.3 | 31.6 | 36.3 | 35.0 | 26.9 | 19.0 | 9.2 | 6.5 |
| Average temperature (°C) | 1.4 | 3.0 | 6.1 | 11.7 | 21.7 | 24.0 | 28.5 | 26.8 | 19.7 | 12.9 | 4.8 | 3.2 |
| Average night temperature (°C) | -1.6 | -1.0 | 1.3 | 6.0 | 14.2 | 16.4 | 19.8 | 19.0 | 13.6 | 7.5 | 1.5 | 0.6 |
| Absolute minimum temperature (°C) | -8.8 | -8.9 | -3.6 | 0.6 | 8.9 | 9.7 | 15.3 | 14.8 | 7.1 | -1.7 | -4.1 | -3.4 |
| 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 | 8.0 |
| Daylight mean duration (h) | 9.1 | 10.3 | 11.9 | 13.6 | 15.0 | 15.7 | 15.4 | 14.1 | 12.6 | 10.9 | 9.5 | 8.7 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 5.0 | 7.0 | 8.1 | 9.3 | 12.9 | 13.1 | 14.0 | 11.2 | 9.4 | 8.3 | 5.3 | 3.1 |
| Precipitation (mm) | 17 | 17 | 23 | 31 | 3 | 3 | 0 | 9 | 9 | 33 | 30 | 46 |
| Sunny days | 17 | 17 | 14 | 17 | 27 | 27 | 30 | 23 | 23 | 23 | 19 | 15 |
| Rainy days | 12 | 10 | 17 | 13 | 4 | 3 | 1 | 8 | 7 | 8 | 11 | 16 |
| Snow days | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit City of West Richland during the most sunny months:
Months with the longest average daylight duration in City of West Richland:
The largest precipitation sum in City of West Richland is at