Weather Reports for the city of Dahlgren in Illinois
snow
rain
temp
wind
humidity| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| Average High (°F) | 41.1 | 45.3 | 57.1 | 68.9 | 77.4 | 86.3 |
| Average Low (°F) | 25.2 | 27.4 | 37.5 | 46.5 | 56.6 | 65.0 |
| All Time High (°F) | 69.8 | 76.1 | 86.0 | 87.8 | 94.1 | 107.6 |
| All Time Low (°F) | -14.8 | -12.1 | -3.6 | 21.0 | 30.9 | 28.4 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Average High (°F) | 88.5 | 86.6 | 82.5 | 70.6 | 55.8 | 47.4 |
| Average Low (°F) | 67.9 | 65.3 | 58.9 | 47.5 | 35.4 | 30.8 |
| All Time High (°F) | 107.6 | 111.2 | 100.4 | 96.8 | 82.8 | 72.9 |
| All Time Low (°F) | 50.0 | 50.0 | 33.8 | 21.2 | 6.1 | -5.8 |
| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| Percent of Rainy Days | 0.1 | 0.1 | 0.2 | 0.2 | 0.2 | 0.2 |
| Avg. Rainfall (in) on Rainy Day | 0.3 | 0.4 | 0.4 | 0.4 | 0.3 | 0.4 |
| All Time Rainfall (in) on Rainy Day | 1.8 | 2.8 | 2.9 | 3.4 | 2.3 | 2.5 |
| 30 Day Rain Accumulation | 1.8 | 1.8 | 3.0 | 3.0 | 2.7 | 2.8 |
| All Time 30 Day Rain Accumulation | 6.2 | 7.8 | 7.3 | 10.1 | 8.8 | 9.4 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Percent of Rainy Days | 0.2 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Avg. Rainfall (in) on Rainy Day | 0.3 | 0.4 | 0.5 | 0.3 | 0.4 | 0.4 |
| All Time Rainfall (in) on Rainy Day | 3.5 | 3.2 | 5.0 | 2.6 | 2.2 | 4.0 |
| 30 Day Rain Accumulation | 2.4 | 2.3 | 1.7 | 1.7 | 2.2 | 2.2 |
| All Time 30 Day Rain Accumulation | 6.4 | 10.8 | 10.0 | 7.3 | 6.0 | 7.5 |
| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| Percent of Days with Snowfall | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 |
| Avg. Snowfall Depth (in) | 1.8 | 1.3 | 0.7 | 0.2 | 0.0 | 0.0 |
| 30 Day Snowfall Total (in) | 3.6 | 2.2 | 0.5 | 0.0 | 0.0 | 0.0 |
| All Time Snowfall Depth (in) | 34.4 | 14.8 | 5.6 | 1.0 | 0.0 | 0.0 |
| All Time 30 Day Snowfall Total (in) | 36.4 | 16.0 | 7.8 | 1.0 | 0.0 | 0.0 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Percent of Days with Snowfall | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Avg. Snowfall Depth (in) | 0.0 | 0.0 | 0.0 | 0.4 | 0.6 | 1.4 |
| 30 Day Snowfall Total (in) | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 | 1.3 |
| All Time Snowfall Depth (in) | 0.0 | 0.0 | 0.0 | 0.8 | 2.4 | 7.5 |
| All Time 30 Day Snowfall Total (in) | 0.0 | 0.0 | 0.0 | 0.8 | 2.4 | 8.0 |
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 | 46.5 | 43.3 | 13.9 | 3.8 | 0.0 | 0.0 |
| Comfortable | 53.5 | 56.4 | 85.3 | 88.2 | 57.1 | 24.2 |
| Muggy | 0.0 | 0.3 | 0.8 | 8.0 | 40.2 | 49.6 |
| Oppressive | 0.0 | 0.0 | 0.0 | 0.0 | 2.7 | 26.2 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Dry | 0.0 | 0.0 | 0.0 | 1.3 | 17.2 | 26.1 |
| Comfortable | 7.4 | 15.1 | 47.4 | 83.7 | 81.0 | 73.6 |
| Muggy | 41.9 | 49.4 | 42.1 | 14.6 | 1.8 | 0.3 |
| Oppressive | 50.6 | 35.6 | 10.5 | 0.5 | 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 | 3.7 | 3.8 | 3.8 | 3.4 | 3.4 |
| 25th | 4.6 | 4.7 | 4.8 | 4.8 | 4.7 | 4.4 |
| 50th | 6.1 | 6.4 | 6.7 | 6.7 | 6.2 | 5.8 |
| 75th | 8.6 | 8.7 | 9.2 | 9.2 | 8.3 | 7.5 |
| 90th | 11.5 | 11.4 | 12.4 | 12.4 | 10.9 | 9.7 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| 10th | 3.4 | 3.4 | 3.4 | 3.4 | 3.4 | 3.4 |
| 25th | 4.1 | 4.0 | 4.1 | 4.4 | 4.5 | 4.5 |
| 50th | 5.1 | 4.9 | 5.2 | 5.7 | 5.8 | 5.8 |
| 75th | 6.6 | 6.3 | 6.9 | 7.8 | 8.2 | 8.1 |
| 90th | 8.3 | 8.1 | 9.0 | 10.3 | 11.4 | 11.0 |
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 | 14.7 | 20.8 | 17.9 | 14.0 | 13.2 | 11.3 |
| NorthEast | 7.2 | 8.9 | 11.7 | 8.3 | 8.2 | 8.2 |
| East | 7.4 | 8.5 | 10.9 | 9.9 | 8.5 | 7.0 |
| SouthEast | 5.9 | 6.6 | 8.1 | 8.6 | 9.7 | 7.9 |
| South | 20.0 | 15.6 | 19.9 | 24.0 | 28.0 | 27.2 |
| SouthWest | 14.2 | 12.6 | 11.3 | 14.0 | 16.3 | 22.3 |
| West | 15.2 | 13.4 | 9.6 | 11.7 | 9.0 | 9.4 |
| NorthWest | 15.2 | 13.6 | 10.6 | 9.4 | 7.2 | 6.7 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| North | 16.7 | 19.4 | 23.7 | 18.6 | 16.3 | 14.7 |
| NorthEast | 11.6 | 13.2 | 11.5 | 7.2 | 6.6 | 7.2 |
| East | 8.1 | 8.8 | 9.0 | 5.8 | 5.8 | 7.9 |
| SouthEast | 7.5 | 8.5 | 6.0 | 6.2 | 8.9 | 7.6 |
| South | 21.2 | 21.6 | 20.9 | 25.4 | 29.0 | 22.6 |
| SouthWest | 21.5 | 14.8 | 13.9 | 14.7 | 12.3 | 14.0 |
| West | 8.0 | 7.4 | 7.4 | 11.8 | 10.1 | 13.3 |
| NorthWest | 5.3 | 6.2 | 7.7 | 10.2 | 10.9 | 12.8 |