Weather Reports for the city of St. Ignatius in Montana
snow
rain
temp
wind
humidity| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| Average High (°F) | 35.1 | 37.2 | 49.8 | 58.4 | 68.3 | 76.6 |
| Average Low (°F) | 18.1 | 18.1 | 25.0 | 30.3 | 38.3 | 45.2 |
| All Time High (°F) | 57.0 | 60.8 | 73.9 | 84.9 | 91.9 | 102.0 |
| All Time Low (°F) | -22.0 | -23.1 | -20.9 | 14.0 | 19.9 | 30.0 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Average High (°F) | 87.3 | 86.3 | 74.9 | 58.1 | 43.5 | 34.5 |
| Average Low (°F) | 49.0 | 48.2 | 40.7 | 30.7 | 24.0 | 18.0 |
| All Time High (°F) | 102.2 | 104.0 | 97.0 | 84.0 | 71.6 | 68.0 |
| All Time Low (°F) | 35.6 | 30.9 | 23.0 | -9.4 | -11.9 | -20.0 |
| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| Percent of Rainy Days | 0.1 | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 |
| Avg. Rainfall (in) on Rainy Day | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 |
| All Time Rainfall (in) on Rainy Day | 0.6 | 0.5 | 0.5 | 1.0 | 1.3 | 1.4 |
| 30 Day Rain Accumulation | 1.1 | 1.1 | 0.9 | 1.2 | 1.5 | 2.2 |
| All Time 30 Day Rain Accumulation | 2.5 | 2.8 | 2.8 | 2.9 | 3.2 | 6.3 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Percent of Rainy Days | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.1 |
| Avg. Rainfall (in) on Rainy Day | 0.1 | 0.1 | 0.2 | 0.1 | 0.1 | 0.1 |
| All Time Rainfall (in) on Rainy Day | 1.0 | 0.5 | 1.0 | 1.0 | 1.0 | 0.5 |
| 30 Day Rain Accumulation | 0.5 | 0.6 | 0.9 | 1.4 | 1.3 | 1.3 |
| All Time 30 Day Rain Accumulation | 2.1 | 1.9 | 2.5 | 4.8 | 3.1 | 2.8 |
| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| Percent of Days with Snowfall | 0.3 | 0.3 | 0.2 | 0.1 | 0.0 | 0.0 |
| Avg. Snowfall Depth (in) | 1.3 | 1.4 | 0.7 | 0.4 | 0.1 | 0.0 |
| 30 Day Snowfall Total (in) | 11.5 | 12.9 | 3.5 | 1.0 | 0.0 | 0.0 |
| All Time Snowfall Depth (in) | 17.4 | 21.0 | 13.2 | 3.0 | 0.8 | 0.0 |
| All Time 30 Day Snowfall Total (in) | 32.4 | 44.9 | 22.6 | 5.7 | 0.8 | 0.0 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Percent of Days with Snowfall | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.4 |
| Avg. Snowfall Depth (in) | 0.0 | 0.0 | 0.2 | 1.2 | 1.0 | 1.2 |
| 30 Day Snowfall Total (in) | 0.0 | 0.0 | 0.0 | 1.5 | 5.6 | 12.7 |
| All Time Snowfall Depth (in) | 0.0 | 0.0 | 0.2 | 15.4 | 10.0 | 13.3 |
| All Time 30 Day Snowfall Total (in) | 0.0 | 0.0 | 0.2 | 17.6 | 19.7 | 46.1 |
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 | 60.5 | 62.9 | 41.3 | 26.7 | 4.4 | 0.0 |
| Comfortable | 39.5 | 37.1 | 58.7 | 73.3 | 95.6 | 100.0 |
| 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 | 0.0 | 1.2 | 10.3 | 39.0 | 63.1 |
| Comfortable | 99.5 | 99.4 | 98.8 | 89.7 | 61.0 | 36.9 |
| Muggy | 0.5 | 0.6 | 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 | 3.4 | 3.4 | 3.4 | 3.4 | 3.4 |
| 25th | 3.4 | 4.0 | 4.6 | 4.7 | 4.7 | 4.7 |
| 50th | 4.7 | 5.3 | 6.0 | 6.9 | 6.9 | 6.3 |
| 75th | 6.6 | 8.1 | 8.6 | 9.8 | 9.2 | 8.8 |
| 90th | 9.6 | 11.4 | 11.5 | 12.8 | 12.1 | 11.3 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| 10th | 3.4 | 3.4 | 3.4 | 3.4 | 3.4 | 3.4 |
| 25th | 4.7 | 4.7 | 4.3 | 3.8 | 3.4 | 3.4 |
| 50th | 6.4 | 6.1 | 5.8 | 5.1 | 4.7 | 4.7 |
| 75th | 8.7 | 8.7 | 8.1 | 7.4 | 6.9 | 6.9 |
| 90th | 11.4 | 11.2 | 10.8 | 10.3 | 10.3 | 10.0 |
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 | 13.9 | 17.5 | 15.0 | 18.6 | 20.9 | 19.0 |
| NorthEast | 6.4 | 7.7 | 5.4 | 6.6 | 8.6 | 5.2 |
| East | 7.7 | 9.4 | 5.9 | 5.6 | 6.3 | 4.1 |
| SouthEast | 11.7 | 13.3 | 11.3 | 11.4 | 11.6 | 12.5 |
| South | 25.9 | 21.8 | 25.1 | 20.4 | 19.4 | 21.0 |
| SouthWest | 10.9 | 8.5 | 10.6 | 9.3 | 7.3 | 8.6 |
| West | 13.9 | 11.3 | 14.2 | 14.6 | 11.8 | 13.6 |
| NorthWest | 9.5 | 10.6 | 12.7 | 13.6 | 14.0 | 15.9 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| North | 21.2 | 20.5 | 19.5 | 17.4 | 14.8 | 13.7 |
| NorthEast | 6.6 | 7.7 | 7.1 | 6.4 | 5.8 | 5.6 |
| East | 4.8 | 6.4 | 5.4 | 5.7 | 7.0 | 8.1 |
| SouthEast | 13.7 | 13.7 | 14.0 | 12.7 | 13.7 | 14.2 |
| South | 18.6 | 17.5 | 18.9 | 21.0 | 25.7 | 26.8 |
| SouthWest | 6.9 | 6.6 | 7.8 | 9.4 | 9.9 | 10.1 |
| West | 13.3 | 13.3 | 13.3 | 14.6 | 12.9 | 11.7 |
| NorthWest | 15.0 | 14.2 | 13.8 | 12.8 | 10.1 | 9.9 |