Average annual temperature is 16.0 °C
Absolute maximum temperature: 35.0 °C
Absolute minimum temperature: -3.3 °C
Number of sunny days: 178 days
Number of rainy days: 187 days
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) | 18.4 | 22.8 | 24.8 | 26.8 | 29.3 | 31.1 | 34.1 | 35.0 | 32.1 | 26.9 | 24.4 | 18.4 |
| Average daytime temperature (°C) | 12.6 | 15.9 | 17.2 | 20.2 | 23.6 | 27.2 | 31.5 | 30.6 | 27.2 | 21.8 | 16.0 | 12.2 |
| Average temperature (°C) | 7.9 | 10.8 | 11.6 | 14.8 | 18.4 | 21.8 | 25.7 | 25.0 | 21.7 | 16.4 | 10.7 | 7.4 |
| Average night temperature (°C) | 4.2 | 7.0 | 6.8 | 10.2 | 14.3 | 17.5 | 20.9 | 21.0 | 17.2 | 12.1 | 6.8 | 3.8 |
| Absolute minimum temperature (°C) | -3.2 | -2.3 | -3.1 | 4.6 | 5.9 | 13.4 | 18.6 | 17.7 | 12.7 | 6.3 | -3.3 | -3.3 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 14.0 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 5.5 | 6.1 | 8.4 | 8.9 | 9.5 | 10.7 | 11.7 | 10.3 | 10.4 | 9.2 | 7.0 | 6.5 |
| Precipitation (mm) | 161 | 119 | 132 | 161 | 56 | 104 | 59 | 125 | 43 | 31 | 48 | 198 |
| Sunny days | 14 | 9 | 15 | 13 | 10 | 13 | 10 | 11 | 20 | 24 | 20 | 19 |
| Rainy days | 17 | 19 | 16 | 17 | 21 | 17 | 21 | 20 | 10 | 7 | 10 | 12 |
| Snow days | 0 | 0 | 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