| Daily Summary |
| | Actual | Average (KIAD) | Record (KIAD) |
| Temperature |
| Mean Temperature |
°F
|
74°F
|
|
| Max Temperature |
82°F
|
85°F
|
104°F
(1983) |
| Min Temperature |
60°F
|
62°F
|
47°F
(1998) |
| Degree Days |
| Heating Degree Days |
0 |
0 |
|
| Month to date heating degree days |
|
0 |
|
| Since 1 July heating degree days |
|
1 |
|
| Cooling Degree Days |
8 |
9 |
|
| Month to date cooling degree days |
|
210 |
|
| Year to date cooling degree days |
|
833 |
|
| Growing Degree Days | 23 (Base
°F
) | | |
| Moisture |
| Dew Point |
50°F
| | |
| Average Humidity |
50 |
|
|
| Maximum Humidity |
77 |
|
|
| Minimum Humidity |
34 |
|
|
| Precipitation |
| Precipitation |
0.00 in
|
0.12 in
|
2.17 in
(1963) |
| Month to date precipitation |
|
2.38 |
|
| Year to date precipitation |
|
26.83 |
|
| Since 1 June precipitation |
|
10.02 |
|
| Snow |
| Snow |
0.00 in
|
in
|
0.00 in
(0.0) |
| Month to date snowfall |
|
0.0 |
|
| Since 1 July snowfall |
|
0.0 |
|
| Snow Depth |
in
|
| |
| Wind |
| Wind Speed |
8 mph
| | |
| Max Wind Speed |
10 mph
| | |
| Max Gust Speed |
mph
| | |
| Visibility |
10 miles
| | |
| Events |
| | |
|
| Key: T is trace of precipitation, MM is missing value |
|
Source: NWS Daily Summary |
