Weather Reports for the county of Gallatin in Montana
snow
rain
temp
wind
humidity| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| Average High (°F) | 37.2 | 36.5 | 49.8 | 57.6 | 65.8 | 78.0 |
| Average Low (°F) | 15.3 | 14.1 | 23.4 | 28.4 | 36.3 | 43.7 |
| All Time High (°F) | 64.9 | 64.9 | 75.0 | 86.0 | 91.0 | 99.0 |
| All Time Low (°F) | -27.9 | -29.0 | -38.9 | -0.9 | 17.1 | 28.9 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Average High (°F) | 87.8 | 86.4 | 76.4 | 60.2 | 46.1 | 35.5 |
| Average Low (°F) | 48.9 | 47.1 | 40.6 | 31.3 | 22.0 | 13.6 |
| All Time High (°F) | 102.0 | 102.9 | 102.0 | 91.0 | 73.9 | 66.0 |
| All Time Low (°F) | 34.0 | 30.9 | 21.9 | -20.0 | -22.0 | -35.0 |
| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| Percent of Rainy Days | 0.0 | 0.0 | 0.1 | 0.2 | 0.3 | 0.3 |
| Avg. Rainfall (in) on Rainy Day | 0.1 | 0.0 | 0.1 | 0.2 | 0.2 | 0.2 |
| All Time Rainfall (in) on Rainy Day | 0.3 | 0.1 | 0.4 | 1.1 | 2.5 | 1.1 |
| 30 Day Rain Accumulation | 0.3 | 0.4 | 0.6 | 1.4 | 2.2 | 2.0 |
| All Time 30 Day Rain Accumulation | 1.0 | 1.2 | 1.4 | 3.5 | 5.0 | 4.4 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Percent of Rainy Days | 0.2 | 0.2 | 0.2 | 0.2 | 0.1 | 0.0 |
| Avg. Rainfall (in) on Rainy Day | 0.1 | 0.2 | 0.2 | 0.1 | 0.1 | 0.1 |
| All Time Rainfall (in) on Rainy Day | 1.0 | 1.1 | 1.2 | 0.7 | 0.5 | 0.3 |
| 30 Day Rain Accumulation | 0.8 | 0.9 | 1.1 | 1.1 | 0.6 | 0.4 |
| All Time 30 Day Rain Accumulation | 2.8 | 2.9 | 3.8 | 3.4 | 1.8 | 1.1 |
| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| Percent of Days with Snowfall | 0.1 | 0.2 | 0.2 | 0.2 | 0.1 | 0.0 |
| Avg. Snowfall Depth (in) | 1.0 | 1.3 | 0.7 | 0.7 | 0.4 | 0.1 |
| 30 Day Snowfall Total (in) | 3.3 | 6.5 | 3.4 | 3.5 | 0.8 | 0.0 |
| All Time Snowfall Depth (in) | 13.2 | 11.0 | 9.6 | 6.7 | 4.5 | 0.5 |
| All Time 30 Day Snowfall Total (in) | 20.0 | 33.5 | 12.8 | 11.1 | 8.2 | 0.5 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Percent of Days with Snowfall | 0.0 | 0.0 | 0.0 | 0.1 | 0.2 | 0.2 |
| Avg. Snowfall Depth (in) | 0.0 | 0.0 | 0.9 | 1.0 | 1.2 | 1.3 |
| 30 Day Snowfall Total (in) | 0.0 | 0.0 | 0.4 | 2.9 | 5.8 | 6.3 |
| All Time Snowfall Depth (in) | 0.0 | 0.0 | 3.6 | 8.0 | 8.7 | 9.6 |
| All Time 30 Day Snowfall Total (in) | 0.0 | 0.0 | 4.8 | 23.8 | 17.9 | 21.2 |
Instead of using humidity directly we use dew point to measure what people commonly mean when saying it feels humid. Dew point is classified into 4 categories: Dry (under 25°F), Comfortable (25°F to 60°F), Muggy (60°F to 70°F) and Oppressive (70°F or greater). The table below shows the percentage of days with a dew point within a particular class.
| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| Dry | 89.5 | 89.1 | 68.6 | 43.4 | 10.1 | 0.2 |
| Comfortable | 10.5 | 10.9 | 31.4 | 56.6 | 89.9 | 99.8 |
| Muggy | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Oppressive | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Dry | 0.0 | 0.7 | 3.8 | 27.2 | 66.8 | 91.3 |
| Comfortable | 100.0 | 99.3 | 96.2 | 72.8 | 33.2 | 8.7 |
| Muggy | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Oppressive | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
The table below shows the distribution of average wind speeds in miles per hour for a given month or day. Wind speed may vary throughout a day and we show the average speed. Peak gusts or sustained maximum speeds may be significantly higher.
| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| 10th | 3.4 | 3.8 | 4.0 | 4.6 | 4.6 | 4.4 |
| 25th | 4.7 | 4.8 | 5.4 | 5.8 | 5.8 | 5.8 |
| 50th | 6.9 | 7.2 | 7.8 | 8.3 | 7.8 | 7.5 |
| 75th | 12.4 | 12.2 | 11.9 | 12.4 | 11.1 | 10.5 |
| 90th | 19.8 | 18.7 | 17.3 | 16.9 | 15.1 | 14.4 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| 10th | 4.6 | 4.6 | 4.3 | 4.0 | 3.4 | 3.4 |
| 25th | 5.8 | 5.8 | 5.4 | 5.1 | 4.7 | 4.7 |
| 50th | 7.5 | 7.3 | 7.0 | 6.9 | 6.9 | 6.9 |
| 75th | 10.1 | 9.9 | 9.9 | 11.0 | 11.8 | 11.8 |
| 90th | 13.4 | 13.3 | 13.8 | 16.1 | 18.3 | 18.9 |
The table below shows the distribution of wind direction (wind coming out of a particular direction) for a given month or day. Wind direction may vary throughout a day and the computation accounts for all measured changes in direction througout the day or month.
| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| North | 3.3 | 4.4 | 5.5 | 7.2 | 8.6 | 8.8 |
| NorthEast | 5.7 | 10.2 | 6.9 | 7.9 | 11.6 | 7.3 |
| East | 9.1 | 14.0 | 11.5 | 14.8 | 17.5 | 11.8 |
| SouthEast | 6.6 | 6.2 | 7.2 | 6.9 | 7.6 | 8.5 |
| South | 19.0 | 13.4 | 16.6 | 13.6 | 11.7 | 15.4 |
| SouthWest | 30.0 | 24.2 | 23.5 | 16.4 | 14.8 | 17.2 |
| West | 17.9 | 18.0 | 19.0 | 21.8 | 17.2 | 18.9 |
| NorthWest | 8.3 | 9.4 | 9.8 | 11.4 | 10.9 | 12.0 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| North | 9.0 | 8.2 | 6.3 | 6.1 | 3.7 | 3.5 |
| NorthEast | 7.9 | 7.6 | 7.1 | 6.4 | 6.4 | 5.4 |
| East | 11.3 | 10.7 | 12.7 | 11.8 | 9.3 | 9.9 |
| SouthEast | 10.4 | 10.1 | 9.1 | 7.5 | 6.8 | 6.6 |
| South | 17.8 | 18.0 | 17.8 | 17.2 | 18.2 | 19.0 |
| SouthWest | 15.4 | 16.3 | 18.2 | 21.2 | 25.9 | 29.5 |
| West | 15.1 | 15.7 | 17.8 | 19.3 | 20.4 | 17.4 |
| NorthWest | 13.1 | 13.4 | 11.0 | 10.2 | 9.2 | 8.7 |