Average annual temperature is 7.6 °C
Absolute maximum temperature: 37.4 °C
Absolute minimum temperature: -27.8 °C
Number of sunny days: 208 days
Number of rainy days: 103 days
Number of snow days: 54 days
Look at detailed online map of Casper
* Weather data for Casper 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) | 4.7 | 5.3 | 10.5 | 19.0 | 25.5 | 29.4 | 37.4 | 35.5 | 32.3 | 26.8 | 16.1 | 11.5 |
| Average daytime temperature (°C) | -2.3 | -0.5 | 2.6 | 9.4 | 20.2 | 22.4 | 30.8 | 29.3 | 25.8 | 15.5 | 8.7 | 5.1 |
| Average temperature (°C) | -5.1 | -5.1 | -3.1 | 3.7 | 13.7 | 15.9 | 22.0 | 21.2 | 17.3 | 7.7 | 2.8 | -0.3 |
| Average night temperature (°C) | -8.2 | -8.6 | -7.7 | -1.0 | 7.6 | 10.6 | 13.7 | 13.9 | 10.2 | 1.8 | -1.6 | -4.4 |
| Absolute minimum temperature (°C) | -26.9 | -27.8 | -16.0 | -9.7 | 3.9 | 6.7 | 8.3 | 8.4 | 5.2 | -8.8 | -16.7 | -13.2 |
| 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) | 9.4 | 10.5 | 11.9 | 13.4 | 14.6 | 15.3 | 15.0 | 13.9 | 12.5 | 11.0 | 9.8 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.2 | 8.1 | 9.3 | 10.1 | 11.2 | 10.6 | 12.7 | 11.7 | 11.0 | 8.5 | 7.2 | 7.3 |
| Precipitation (mm) | 60 | 30 | 17 | 67 | 83 | 116 | 5 | 52 | 26 | 62 | 16 | 6 |
| Sunny days | 13 | 16 | 16 | 16 | 10 | 10 | 20 | 15 | 23 | 22 | 23 | 24 |
| Rainy days | 2 | 2 | 2 | 8 | 21 | 20 | 11 | 16 | 7 | 8 | 5 | 1 |
| Snow days | 16 | 10 | 13 | 6 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 6 |
The best time to visit Casper during the most sunny months:
Months with the longest average daylight duration in Casper:
The largest precipitation sum in Casper is at