Weather Reports for the county of Prince William in Virginia
snow
rain
temp
wind
humidity| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| Average High (°F) | 45.6 | 49.6 | 59.2 | 70.8 | 78.5 | 85.9 |
| Average Low (°F) | 25.1 | 28.0 | 34.6 | 43.6 | 54.4 | 62.5 |
| All Time High (°F) | 75.4 | 81.9 | 89.6 | 93.7 | 96.8 | 104.0 |
| All Time Low (°F) | -2.6 | -2.2 | -8.5 | 20.7 | 27.0 | 42.4 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Average High (°F) | 90.5 | 87.7 | 81.9 | 71.5 | 59.4 | 51.4 |
| Average Low (°F) | 67.4 | 65.6 | 59.0 | 47.8 | 34.4 | 30.6 |
| All Time High (°F) | 105.8 | 102.2 | 98.6 | 96.4 | 82.6 | 77.0 |
| All Time Low (°F) | 48.2 | 49.1 | 34.7 | 24.8 | 11.8 | 6.8 |
| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| Percent of Rainy Days | 0.2 | 0.2 | 0.2 | 0.2 | 0.3 | 0.2 |
| Avg. Rainfall (in) on Rainy Day | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | 0.4 |
| All Time Rainfall (in) on Rainy Day | 1.7 | 2.3 | 1.9 | 3.0 | 3.0 | 8.6 |
| 30 Day Rain Accumulation | 1.3 | 1.6 | 1.6 | 2.0 | 2.7 | 2.8 |
| All Time 30 Day Rain Accumulation | 3.5 | 6.4 | 5.5 | 5.9 | 7.0 | 19.4 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Percent of Rainy Days | 0.2 | 0.2 | 0.2 | 0.2 | 0.1 | 0.2 |
| Avg. Rainfall (in) on Rainy Day | 0.4 | 0.4 | 0.4 | 0.4 | 0.3 | 0.3 |
| All Time Rainfall (in) on Rainy Day | 3.9 | 4.7 | 7.9 | 2.6 | 3.0 | 2.3 |
| 30 Day Rain Accumulation | 2.4 | 2.8 | 2.6 | 2.5 | 1.5 | 1.9 |
| All Time 30 Day Rain Accumulation | 8.8 | 10.2 | 16.2 | 6.2 | 7.6 | 6.5 |
| 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) | 1.2 | 1.3 | 1.5 | 0.5 | 0.0 | 0.0 |
| 30 Day Snowfall Total (in) | 2.3 | 3.2 | 1.6 | 0.0 | 0.0 | 0.0 |
| All Time Snowfall Depth (in) | 10.5 | 11.6 | 7.8 | 1.4 | 0.0 | 0.0 |
| All Time 30 Day Snowfall Total (in) | 10.5 | 22.8 | 14.7 | 1.4 | 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 | 0.5 | 0.1 | 1.8 |
| 30 Day Snowfall Total (in) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.5 |
| All Time Snowfall Depth (in) | 0.0 | 0.0 | 0.0 | 0.5 | 0.6 | 12.3 |
| All Time 30 Day Snowfall Total (in) | 0.0 | 0.0 | 0.0 | 0.5 | 0.6 | 13.0 |
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 | 53.0 | 47.5 | 31.7 | 7.4 | 0.4 | 0.0 |
| Comfortable | 46.8 | 52.5 | 67.5 | 88.6 | 60.8 | 29.3 |
| Muggy | 0.2 | 0.0 | 0.7 | 3.8 | 35.5 | 53.5 |
| Oppressive | 0.0 | 0.0 | 0.0 | 0.2 | 3.3 | 17.2 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Dry | 0.0 | 0.0 | 0.0 | 0.0 | 16.3 | 32.4 |
| Comfortable | 10.0 | 11.9 | 43.7 | 79.9 | 82.3 | 66.6 |
| Muggy | 48.7 | 54.6 | 42.7 | 18.7 | 1.4 | 1.0 |
| Oppressive | 41.3 | 33.5 | 13.6 | 1.4 | 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 | 4.0 | 4.3 | 4.6 | 4.7 | 4.2 | 4.2 |
| 50th | 5.8 | 5.8 | 6.3 | 6.2 | 5.4 | 5.4 |
| 75th | 8.3 | 8.1 | 9.1 | 8.8 | 7.1 | 6.9 |
| 90th | 11.9 | 11.6 | 12.5 | 11.8 | 9.5 | 9.0 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| 10th | 3.4 | 3.4 | 3.4 | 3.4 | 3.4 | 3.4 |
| 25th | 4.0 | 4.0 | 3.9 | 3.9 | 4.0 | 3.8 |
| 50th | 5.1 | 5.0 | 5.0 | 5.3 | 5.4 | 5.1 |
| 75th | 6.7 | 6.5 | 6.6 | 7.2 | 7.7 | 7.3 |
| 90th | 8.3 | 8.1 | 8.4 | 9.8 | 10.7 | 10.4 |
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 | 23.0 | 21.5 | 21.9 | 16.3 | 14.0 | 13.2 |
| NorthEast | 5.8 | 6.5 | 6.7 | 7.4 | 8.4 | 6.0 |
| East | 2.8 | 4.2 | 6.1 | 8.0 | 11.3 | 5.5 |
| SouthEast | 6.4 | 7.9 | 8.9 | 10.2 | 15.2 | 13.9 |
| South | 15.8 | 17.5 | 15.1 | 19.6 | 21.3 | 25.0 |
| SouthWest | 9.1 | 8.7 | 8.2 | 10.2 | 9.1 | 11.7 |
| West | 9.4 | 9.6 | 8.0 | 8.7 | 6.7 | 8.3 |
| NorthWest | 27.8 | 24.0 | 25.0 | 19.6 | 13.9 | 16.5 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| North | 14.7 | 14.7 | 23.5 | 20.5 | 21.0 | 20.4 |
| NorthEast | 4.0 | 6.4 | 10.5 | 6.3 | 5.0 | 5.2 |
| East | 4.8 | 7.1 | 6.5 | 4.5 | 2.6 | 2.8 |
| SouthEast | 14.4 | 17.1 | 13.9 | 10.6 | 8.1 | 7.6 |
| South | 25.4 | 24.9 | 19.0 | 21.2 | 18.7 | 17.9 |
| SouthWest | 13.1 | 10.2 | 7.1 | 8.5 | 8.2 | 9.8 |
| West | 8.8 | 7.1 | 5.1 | 7.2 | 8.7 | 10.4 |
| NorthWest | 14.7 | 12.4 | 14.2 | 21.0 | 27.7 | 25.9 |