Average annual temperature is 13.4 °C
Absolute maximum temperature: 40.2 °C
Absolute minimum temperature: -4.7 °C
Number of sunny days: 252 days
Number of rainy days: 112 days
Number of snow days: 1 day
Look at detailed online map of Happy Valley
* Weather data for Happy Valley 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) | 16.8 | 16.6 | 18.0 | 28.9 | 30.2 | 35.7 | 40.2 | 38.1 | 30.9 | 30.4 | 21.8 | 18.0 |
| Average daytime temperature (°C) | 10.9 | 11.0 | 10.7 | 18.5 | 22.0 | 26.0 | 34.0 | 32.4 | 25.4 | 22.4 | 16.3 | 13.8 |
| Average temperature (°C) | 5.8 | 5.0 | 5.5 | 11.2 | 14.9 | 18.1 | 25.2 | 24.1 | 18.1 | 14.9 | 9.8 | 8.0 |
| Average night temperature (°C) | 1.9 | 0.6 | 1.8 | 4.8 | 8.6 | 10.8 | 15.6 | 16.3 | 11.9 | 9.1 | 4.6 | 3.6 |
| Absolute minimum temperature (°C) | -4.0 | -3.1 | -4.7 | -4.2 | 2.8 | 5.4 | 8.3 | 12.4 | 7.0 | 0.8 | -0.3 | -3.1 |
| 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 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.8 | 10.8 | 12.0 | 13.2 | 14.3 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 9.5 |
| 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) | 5.2 | 7.0 | 6.6 | 11.3 | 11.7 | 12.8 | 13.5 | 12.0 | 10.8 | 9.8 | 8.2 | 6.7 |
| Precipitation (mm) | 370 | 172 | 349 | 9 | 34 | 2 | 0 | 8 | 38 | 24 | 69 | 113 |
| Sunny days | 12 | 13 | 8 | 25 | 20 | 26 | 31 | 27 | 25 | 24 | 22 | 19 |
| Rainy days | 19 | 14 | 23 | 5 | 11 | 4 | 0 | 4 | 5 | 7 | 8 | 12 |
| Snow days | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Happy Valley during the most sunny months:
The largest precipitation sum in Happy Valley is at