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
Washington/Dulles International Airport, DC (KIAD)
Lat: 38.93°NLon: 77.45°WElev: 312ft.
Partly Cloudy
84°F
29°C
| Humidity | 51% |
| Wind Speed | S 6 mph |
| Barometer | 30.11 in (1019.1 mb) |
| Dewpoint | 64°F (18°C) |
| Visibility | 10.00 mi |
| Heat Index | 85°F (29°C) |
| Last update | 21 Jun 7:52 pm EDT |
Extended Forecast for
Great Falls VA
Extreme Heat Watch June 23, 11:00am until June 23, 09:00pm
Tonight
Low: 71 °F
Mostly Clear
Sunday
High: 96 °F
Sunny
Sunday Night
Low: 75 °F
Mostly Clear
Monday
High: 98 °F
Hot
Monday Night
Low: 78 °F
Mostly Clear
Tuesday
High: 99 °F
Hot
Tuesday Night
Low: 77 °F
Mostly Clear
Wednesday
High: 98 °F
Hot
Wednesday Night
Low: 76 °F
Partly Cloudy
Detailed Forecast
Tonight
Mostly clear, with a low around 71. South wind around 6 mph.
Sunday
Sunny, with a high near 96. Heat index values as high as 103. Southwest wind 5 to 7 mph.
Sunday Night
Mostly clear, with a low around 75. Southwest wind 3 to 6 mph.
Monday
Sunny and hot, with a high near 98. Heat index values as high as 106. Northwest wind 3 to 6 mph.
Monday Night
Mostly clear, with a low around 78. Light west wind.
Tuesday
Sunny and hot, with a high near 99.
Tuesday Night
Mostly clear, with a low around 77.
Wednesday
Mostly sunny and hot, with a high near 98.
Wednesday Night
Partly cloudy, with a low around 76.
Thursday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 96. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 75. 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 74. Chance of precipitation is 40%.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 30%.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Great Falls VA
39.01°N 77.29°W (Elev. 348 ft)
39.01°N 77.29°W (Elev. 348 ft)
7:30 pm EDT Jun 21, 2025
8pm EDT Jun 21, 2025-6pm EDT Jun 28, 2025
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