Average annual temperature is 11.0 °C
Absolute maximum temperature: 37.7 °C
Absolute minimum temperature: -10.3 °C
Number of sunny days: 165 days
Number of rainy days: 198 days
Number of snow days: 2 days
Look at detailed online map of Siletz Reservation
* Weather data for Siletz Reservation 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) | 15.1 | 14.2 | 18.9 | 28.3 | 33.1 | 28.3 | 30.3 | 37.7 | 30.4 | 27.9 | 17.3 | 15.2 |
| Average daytime temperature (°C) | 9.7 | 9.1 | 10.3 | 12.5 | 18.9 | 20.8 | 23.2 | 25.7 | 21.3 | 18.2 | 12.8 | 11.7 |
| Average temperature (°C) | 5.9 | 4.5 | 5.0 | 8.1 | 13.2 | 14.4 | 16.8 | 18.6 | 15.2 | 12.4 | 8.5 | 8.5 |
| Average night temperature (°C) | 3.2 | 1.1 | 1.4 | 4.8 | 8.9 | 9.4 | 11.4 | 13.2 | 10.7 | 8.9 | 5.5 | 6.1 |
| Absolute minimum temperature (°C) | -4.3 | -10.3 | -9.0 | -0.9 | 3.7 | 5.3 | 8.0 | 8.3 | 5.9 | 1.2 | -1.2 | -0.7 |
| 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) | 9.3 | 10.4 | 11.9 | 13.5 | 14.8 | 15.5 | 15.2 | 14.0 | 12.5 | 11.0 | 9.6 | 8.9 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 3.9 | 5.5 | 6.4 | 6.8 | 10.8 | 12.9 | 13.0 | 11.9 | 9.3 | 6.8 | 4.9 | 3.1 |
| Precipitation (mm) | 232 | 182 | 254 | 273 | 30 | 49 | 5 | 16 | 107 | 115 | 169 | 400 |
| Sunny days | 8 | 8 | 4 | 6 | 19 | 25 | 23 | 23 | 16 | 15 | 12 | 6 |
| Rainy days | 23 | 19 | 26 | 24 | 12 | 5 | 8 | 8 | 14 | 16 | 18 | 25 |
| Snow days | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Siletz Reservation during the most sunny months:
Months with the longest average daylight duration in Siletz Reservation:
The largest precipitation sum in Siletz Reservation is at