Average annual temperature is 10.8 °C
Absolute maximum temperature: 33.6 °C
Absolute minimum temperature: -4.5 °C
Number of sunny days: 178 days
Number of rainy days: 185 days
Number of snow days: 2 days
Look at detailed online map of Vashon Heights
* Weather data for Vashon Heights 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) | 11.7 | 12.5 | 15.6 | 22.1 | 28.6 | 30.2 | 31.8 | 33.6 | 27.2 | 25.9 | 15.1 | 13.6 |
| Average daytime temperature (°C) | 7.7 | 7.3 | 10.1 | 11.8 | 20.3 | 22.2 | 27.0 | 27.1 | 21.4 | 15.8 | 9.9 | 9.0 |
| Average temperature (°C) | 4.9 | 3.9 | 5.3 | 7.3 | 14.2 | 15.5 | 19.2 | 19.9 | 15.1 | 11.0 | 6.8 | 6.2 |
| Average night temperature (°C) | 2.8 | 1.6 | 2.2 | 4.6 | 9.8 | 10.8 | 12.8 | 14.5 | 11.1 | 8.1 | 4.4 | 4.2 |
| Absolute minimum temperature (°C) | -4.2 | -4.5 | -1.6 | 0.7 | 6.6 | 6.3 | 10.4 | 10.8 | 7.7 | 0.1 | -2.7 | 0.2 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 10.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 |
| Daylight mean duration (h) | 8.9 | 10.3 | 11.9 | 13.6 | 15.1 | 15.9 | 15.5 | 14.2 | 12.6 | 10.9 | 9.3 | 8.5 |
| 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) | 3.3 | 5.2 | 7.5 | 6.9 | 11.0 | 11.4 | 13.1 | 11.1 | 8.5 | 6.4 | 5.2 | 2.5 |
| Precipitation (mm) | 118 | 71 | 74 | 151 | 18 | 40 | 4 | 41 | 69 | 93 | 147 | 222 |
| Sunny days | 6 | 11 | 11 | 6 | 22 | 19 | 26 | 21 | 15 | 16 | 16 | 9 |
| Rainy days | 24 | 16 | 20 | 24 | 9 | 11 | 5 | 10 | 15 | 15 | 14 | 22 |
| Snow days | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Vashon Heights during the most sunny months:
Months with the longest average daylight duration in Vashon Heights:
The largest precipitation sum in Vashon Heights is at