Average annual temperature is 5.4 °C
Absolute maximum temperature: 33.4 °C
Absolute minimum temperature: -29.4 °C
Number of sunny days: 192 days
Number of rainy days: 114 days
Number of snow days: 59 days
Look at detailed online map of Gallatin County
* Weather data for Gallatin 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) | 8.6 | 8.0 | 9.1 | 21.2 | 24.8 | 25.7 | 31.8 | 33.4 | 28.4 | 22.0 | 14.6 | 13.6 |
| Average daytime temperature (°C) | -0.3 | 1.1 | 1.3 | 8.4 | 18.1 | 18.9 | 26.9 | 25.7 | 20.7 | 12.2 | 7.6 | 4.6 |
| Average temperature (°C) | -6.3 | -5.4 | -4.6 | 1.4 | 10.8 | 12.9 | 18.5 | 18.0 | 13.2 | 5.4 | 1.5 | -1.5 |
| Average night temperature (°C) | -10.8 | -10.1 | -9.2 | -3.7 | 3.5 | 6.7 | 9.8 | 11.1 | 6.8 | 0.5 | -2.9 | -5.9 |
| Absolute minimum temperature (°C) | -29.4 | -29.2 | -16.1 | -12.7 | -3.4 | -1.0 | 3.2 | 7.1 | 1.9 | -17.2 | -9.3 | -15.8 |
| 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 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 5.4 | 6.7 | 7.6 | 10.1 | 11.9 | 11.0 | 13.6 | 11.0 | 10.1 | 7.6 | 6.8 | 5.9 |
| Precipitation (mm) | 32 | 33 | 67 | 58 | 55 | 128 | 9 | 49 | 74 | 67 | 9 | 29 |
| Sunny days | 15 | 16 | 9 | 17 | 10 | 11 | 23 | 21 | 16 | 14 | 19 | 21 |
| Rainy days | 2 | 1 | 6 | 5 | 21 | 19 | 8 | 10 | 14 | 14 | 10 | 4 |
| Snow days | 14 | 11 | 16 | 8 | 0 | 0 | 0 | 0 | 0 | 3 | 1 | 6 |
The best time to visit Gallatin County during the most sunny months:
Months with the longest average daylight duration in Gallatin County:
The largest precipitation sum in Gallatin County is at