Weather Reports for the zip_code of 20603 in Maryland
snow
rain
temp
wind
humidity| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| Average High (°F) | 46.2 | 49.9 | 59.1 | 70.5 | 78.4 | 86.3 |
| Average Low (°F) | 26.8 | 29.1 | 35.9 | 45.0 | 55.5 | 64.2 |
| All Time High (°F) | 72.0 | 82.0 | 85.1 | 93.7 | 98.1 | 104.0 |
| All Time Low (°F) | -2.2 | 0.3 | 4.8 | 23.4 | 29.1 | 45.0 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Average High (°F) | 90.8 | 87.9 | 82.5 | 71.8 | 59.9 | 51.9 |
| Average Low (°F) | 69.6 | 67.5 | 61.4 | 50.2 | 37.1 | 32.5 |
| All Time High (°F) | 105.1 | 100.9 | 99.0 | 98.1 | 82.9 | 73.4 |
| All Time Low (°F) | 50.7 | 52.9 | 39.4 | 28.0 | 14.2 | 10.4 |
| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| Percent of Rainy Days | 0.2 | 0.3 | 0.3 | 0.3 | 0.4 | 0.3 |
| Avg. Rainfall (in) on Rainy Day | 0.2 | 0.3 | 0.3 | 0.3 | 0.3 | 0.5 |
| All Time Rainfall (in) on Rainy Day | 1.9 | 5.0 | 1.9 | 3.4 | 3.0 | 8.6 |
| 30 Day Rain Accumulation | 2.6 | 3.3 | 3.1 | 3.3 | 4.3 | 4.8 |
| All Time 30 Day Rain Accumulation | 4.5 | 7.1 | 5.5 | 5.9 | 7.4 | 19.4 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Percent of Rainy Days | 0.3 | 0.3 | 0.3 | 0.3 | 0.2 | 0.3 |
| Avg. Rainfall (in) on Rainy Day | 0.5 | 0.4 | 0.5 | 0.4 | 0.4 | 0.3 |
| All Time Rainfall (in) on Rainy Day | 7.0 | 4.7 | 7.9 | 3.8 | 6.6 | 2.7 |
| 30 Day Rain Accumulation | 5.0 | 4.9 | 4.2 | 4.0 | 2.8 | 3.7 |
| All Time 30 Day Rain Accumulation | 11.6 | 14.9 | 16.2 | 6.5 | 8.5 | 8.0 |
| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| Percent of Days with Snowfall | 0.1 | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 |
| Avg. Snowfall Depth (in) | 1.6 | 2.0 | 1.7 | 0.2 | 0.0 | 0.0 |
| 30 Day Snowfall Total (in) | 5.4 | 8.5 | 3.7 | 0.0 | 0.0 | 0.0 |
| All Time Snowfall Depth (in) | 22.1 | 83.4 | 10.9 | 1.4 | 0.0 | 0.0 |
| All Time 30 Day Snowfall Total (in) | 22.8 | 97.5 | 16.4 | 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 | 0.3 | 0.1 | 1.5 |
| 30 Day Snowfall Total (in) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.9 |
| All Time Snowfall Depth (in) | 0.0 | 0.0 | 0.0 | 0.6 | 0.6 | 12.3 |
| All Time 30 Day Snowfall Total (in) | 0.0 | 0.0 | 0.0 | 0.6 | 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 | 54.3 | 48.6 | 34.2 | 8.2 | 0.4 | 0.0 |
| Comfortable | 45.6 | 51.4 | 65.7 | 88.3 | 63.7 | 32.0 |
| Muggy | 0.1 | 0.0 | 0.1 | 3.3 | 34.4 | 55.1 |
| Oppressive | 0.0 | 0.0 | 0.0 | 0.1 | 1.4 | 12.9 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Dry | 0.0 | 0.0 | 0.0 | 0.0 | 17.4 | 33.4 |
| Comfortable | 11.6 | 14.0 | 42.0 | 79.3 | 81.3 | 65.9 |
| Muggy | 50.6 | 55.5 | 44.8 | 18.9 | 1.3 | 0.7 |
| Oppressive | 37.8 | 30.6 | 13.1 | 1.8 | 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 | 3.7 | 3.4 | 3.4 | 3.4 |
| 25th | 4.7 | 4.7 | 5.3 | 5.1 | 4.7 | 4.8 |
| 50th | 6.9 | 6.9 | 7.5 | 7.4 | 6.7 | 6.9 |
| 75th | 10.1 | 9.9 | 10.7 | 10.4 | 9.2 | 9.0 |
| 90th | 14.2 | 13.9 | 14.9 | 14.2 | 12.0 | 11.5 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| 10th | 3.4 | 3.4 | 3.4 | 3.4 | 3.4 | 3.4 |
| 25th | 4.7 | 4.7 | 4.6 | 4.6 | 4.6 | 4.3 |
| 50th | 6.3 | 6.1 | 6.0 | 6.3 | 6.5 | 6.0 |
| 75th | 8.3 | 8.1 | 8.1 | 9.0 | 9.5 | 9.2 |
| 90th | 10.5 | 10.2 | 10.6 | 12.1 | 12.8 | 12.9 |
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 | 16.3 | 15.1 | 17.9 | 12.2 | 10.5 | 9.7 |
| NorthEast | 9.7 | 9.9 | 10.0 | 10.1 | 12.0 | 9.0 |
| East | 4.6 | 6.7 | 9.4 | 10.7 | 15.4 | 8.4 |
| SouthEast | 6.4 | 7.8 | 8.9 | 10.0 | 13.1 | 11.6 |
| South | 17.0 | 18.6 | 15.4 | 20.0 | 21.4 | 25.9 |
| SouthWest | 8.1 | 7.3 | 6.2 | 7.3 | 7.4 | 11.6 |
| West | 11.1 | 10.1 | 8.4 | 9.7 | 7.9 | 9.6 |
| NorthWest | 26.7 | 24.4 | 23.7 | 19.9 | 12.4 | 14.2 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| North | 12.3 | 11.7 | 15.7 | 16.0 | 15.5 | 14.2 |
| NorthEast | 6.2 | 9.6 | 16.0 | 11.0 | 7.9 | 8.4 |
| East | 7.0 | 9.2 | 10.4 | 6.6 | 4.5 | 5.2 |
| SouthEast | 11.7 | 13.1 | 10.6 | 8.8 | 7.2 | 7.6 |
| South | 26.5 | 27.0 | 21.0 | 22.1 | 20.9 | 20.3 |
| SouthWest | 13.3 | 9.9 | 7.5 | 9.1 | 8.2 | 8.8 |
| West | 10.2 | 8.2 | 5.9 | 8.4 | 10.8 | 11.1 |
| NorthWest | 12.8 | 11.3 | 12.7 | 18.0 | 24.9 | 24.5 |