Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Great Lakes
Thunderstorms with strong wind gusts and hail will be possible today from Michigan into the Lower Great Lakes region. A significant and dangerous heat wave will expand from the Central U.S. into the Eastern U.S this weekend through much of next week. Numerous daily record highs and warm lows are likely. Read More >
Hazardous Weather Conditions
Current conditions at
Fort Belvoir (KDAA)
Lat: 38.72°NLon: 77.18°WElev: 69ft.
Fair
90°F
32°C
| Humidity | 44% |
| Wind Speed | SE 8 mph |
| Barometer | 30.09 in (1019.2 mb) |
| Dewpoint | 65°F (18°C) |
| Visibility | 10.00 mi |
| Heat Index | 92°F (33°C) |
| Last update | 21 Jun 3:55 pm EDT |
Extended Forecast for
Mount Vernon VA
Extreme Heat Watch June 23, 11:00am until June 23, 09:00pm
Tonight
Low: 75 °F
Mostly Clear
Sunday
High: 94 °F
Sunny
Sunday Night
Low: 78 °F
Mostly Clear
Monday
High: 97 °F
Hot
Monday Night
Low: 81 °F
Mostly Clear
Tuesday
High: 98 °F
Hot
Tuesday Night
Low: 80 °F
Partly Cloudy
Wednesday
High: 97 °F
Hot
Wednesday Night
Low: 79 °F
Partly Cloudy
Detailed Forecast
Tonight
Mostly clear, with a low around 75. South wind around 7 mph.
Sunday
Sunny, with a high near 94. Southwest wind around 7 mph.
Sunday Night
Mostly clear, with a low around 78. South wind 3 to 5 mph.
Monday
Sunny and hot, with a high near 97. Heat index values as high as 105. Light northwest wind.
Monday Night
Mostly clear, with a low around 81. Light west wind.
Tuesday
Sunny and hot, with a high near 98.
Tuesday Night
Partly cloudy, with a low around 80.
Wednesday
Mostly sunny and hot, with a high near 97.
Wednesday Night
Partly cloudy, with a low around 79.
Thursday
Mostly sunny, with a high near 94.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 78. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 76. Chance of precipitation is 30%.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 30%.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Mount Vernon VA
38.69°N 77.09°W (Elev. 3 ft)
38.69°N 77.09°W (Elev. 3 ft)
1:29 pm EDT Jun 21, 2025
4pm EDT Jun 21, 2025-6pm EDT Jun 28, 2025
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