Average annual temperature is 8.9 °C
Absolute maximum temperature: 38.6 °C
Absolute minimum temperature: -13.1 °C
Number of sunny days: 189 days
Number of rainy days: 146 days
Number of snow days: 30 days
Look at detailed online map of City of Sisters
* Weather data for City of Sisters 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) | 12.6 | 13.2 | 13.0 | 26.7 | 28.3 | 33.5 | 36.1 | 38.6 | 31.7 | 25.9 | 14.7 | 15.1 |
| Average daytime temperature (°C) | 5.6 | 6.4 | 5.7 | 12.3 | 21.0 | 25.6 | 31.0 | 30.1 | 22.5 | 16.1 | 7.9 | 6.5 |
| Average temperature (°C) | 0.0 | 0.0 | 0.4 | 5.6 | 13.2 | 17.0 | 21.1 | 20.9 | 14.1 | 8.8 | 3.0 | 2.2 |
| Average night temperature (°C) | -4.0 | -3.7 | -3.6 | 0.8 | 6.3 | 8.7 | 10.3 | 12.3 | 7.3 | 3.7 | -0.7 | -0.6 |
| Absolute minimum temperature (°C) | -13.0 | -13.1 | -10.1 | -5.8 | 0.8 | 1.0 | 6.9 | 5.4 | 1.1 | -6.5 | -8.1 | -6.7 |
| 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 | 10.5 | 11.9 | 13.5 | 14.8 | 15.5 | 15.1 | 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) | 4.8 | 6.6 | 6.6 | 9.4 | 11.8 | 13.6 | 14.0 | 12.0 | 9.7 | 8.1 | 5.1 | 3.7 |
| Precipitation (mm) | 56 | 40 | 83 | 74 | 35 | 5 | 0 | 14 | 49 | 45 | 51 | 158 |
| Sunny days | 9 | 11 | 5 | 9 | 19 | 23 | 31 | 24 | 19 | 17 | 14 | 8 |
| Rainy days | 17 | 12 | 15 | 15 | 12 | 7 | 0 | 7 | 11 | 13 | 15 | 22 |
| Snow days | 5 | 5 | 11 | 6 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 |
The best time to visit City of Sisters during the most sunny months:
Months with the longest average daylight duration in City of Sisters:
The largest precipitation sum in City of Sisters is at