Average annual temperature is 10.1 °C
Absolute maximum temperature: 39.1 °C
Absolute minimum temperature: -29.9 °C
Number of sunny days: 224 days
Number of rainy days: 110 days
Number of snow days: 31 days
Look at detailed online map of Yellowstone County
* Weather data for Yellowstone 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) | 11.5 | 13.7 | 13.0 | 26.7 | 30.2 | 29.5 | 39.1 | 38.4 | 35.2 | 27.1 | 17.9 | 16.3 |
| Average daytime temperature (°C) | 4.8 | 4.4 | 4.1 | 15.2 | 24.5 | 24.9 | 32.0 | 32.1 | 26.9 | 15.4 | 11.7 | 8.5 |
| Average temperature (°C) | -1.2 | -2.1 | -2.3 | 7.0 | 17.0 | 18.6 | 24.1 | 24.3 | 19.3 | 8.3 | 4.9 | 2.2 |
| Average night temperature (°C) | -4.8 | -6.5 | -6.8 | 0.9 | 10.0 | 12.8 | 16.4 | 17.4 | 12.6 | 3.4 | 0.2 | -1.8 |
| Absolute minimum temperature (°C) | -21.3 | -29.9 | -13.1 | -6.7 | 4.6 | 6.8 | 8.9 | 12.6 | 7.5 | -15.7 | -7.9 | -9.7 |
| 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 | 8.0 |
| Daylight mean duration (h) | 9.1 | 10.4 | 11.9 | 13.6 | 14.9 | 15.7 | 15.3 | 14.1 | 12.5 | 10.9 | 9.5 | 8.7 |
| 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) | 6.1 | 7.1 | 7.5 | 10.1 | 11.5 | 11.6 | 13.2 | 11.5 | 10.4 | 7.0 | 7.1 | 6.3 |
| Precipitation (mm) | 15 | 32 | 40 | 20 | 48 | 145 | 13 | 11 | 33 | 56 | 12 | 2 |
| Sunny days | 23 | 19 | 14 | 18 | 8 | 9 | 26 | 20 | 22 | 18 | 22 | 25 |
| Rainy days | 4 | 4 | 3 | 10 | 23 | 21 | 5 | 11 | 8 | 10 | 8 | 3 |
| Snow days | 4 | 5 | 14 | 2 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 3 |
The best time to visit Yellowstone County during the most sunny months:
Months with the longest average daylight duration in Yellowstone County:
The largest precipitation sum in Yellowstone County is at