Average annual temperature is 9.3 °C
Absolute maximum temperature: 38.5 °C
Absolute minimum temperature: -32.5 °C
Number of sunny days: 220 days
Number of rainy days: 104 days
Number of snow days: 41 days
Look at detailed online map of Powder River County
* Weather data for Powder River County 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) | 10.9 | 12.4 | 9.5 | 27.9 | 30.1 | 31.0 | 38.5 | 36.0 | 33.9 | 27.5 | 18.4 | 17.5 |
| Average daytime temperature (°C) | 1.8 | 1.5 | 2.5 | 13.5 | 22.8 | 24.9 | 30.4 | 29.6 | 25.6 | 14.0 | 10.5 | 7.3 |
| Average temperature (°C) | -2.7 | -3.8 | -3.2 | 6.1 | 16.3 | 18.8 | 23.7 | 22.9 | 18.4 | 7.7 | 4.6 | 2.0 |
| Average night temperature (°C) | -5.8 | -8.0 | -7.2 | 0.9 | 10.5 | 13.7 | 17.2 | 17.2 | 13.0 | 3.0 | 0.5 | -1.5 |
| Absolute minimum temperature (°C) | -24.7 | -32.5 | -14.4 | -7.4 | 2.6 | 9.8 | 8.9 | 12.3 | 9.3 | -16.3 | -9.4 | -9.3 |
| 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 | 8.0 |
| Daylight mean duration (h) | 9.2 | 10.4 | 11.9 | 13.5 | 14.9 | 15.6 | 15.3 | 14.1 | 12.5 | 10.9 | 9.5 | 8.8 |
| 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) | 5.7 | 7.1 | 8.0 | 9.9 | 10.8 | 11.4 | 13.4 | 11.3 | 10.8 | 7.5 | 7.4 | 6.1 |
| Precipitation (mm) | 24 | 33 | 24 | 16 | 65 | 98 | 6 | 67 | 60 | 30 | 3 | 8 |
| Sunny days | 20 | 17 | 16 | 18 | 10 | 10 | 21 | 21 | 21 | 16 | 26 | 24 |
| Rainy days | 3 | 4 | 1 | 7 | 21 | 20 | 10 | 10 | 9 | 11 | 4 | 4 |
| Snow days | 8 | 7 | 14 | 5 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 3 |
The best time to visit Powder River County during the most sunny months:
Months with the longest average daylight duration in Powder River County:
The largest precipitation sum in Powder River County is at