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
Gaithersburg - Montgomery County Airport (KGAI)
Lat: 39.17°NLon: 77.17°WElev: 495ft.N/A
| Humidity | NA |
| Wind Speed | NA |
| Barometer | NA |
| Dewpoint | N/A |
| Visibility | NA |
| Last update | *** Not a current observation *** |
Extended Forecast for
4 Miles SE Poolesville MD
Extreme Heat Watch June 23, 11:00am until June 23, 09:00pm
Tonight
Low: 70 °F
Mostly Clear
Sunday
High: 97 °F
Hot
Sunday Night
Low: 74 °F
Mostly Clear
Monday
High: 99 °F
Hot
Monday Night
Low: 77 °F
Mostly Clear
Tuesday
High: 100 °F
Hot
Tuesday Night
Low: 76 °F
Mostly Clear
Wednesday
High: 98 °F
Hot
Wednesday Night
Low: 75 °F
Partly Cloudy
Detailed Forecast
Tonight
Mostly clear, with a low around 70. South wind 5 to 7 mph.
Sunday
Sunny and hot, with a high near 97. Heat index values as high as 104. Southwest wind 5 to 7 mph.
Sunday Night
Mostly clear, with a low around 74. Southwest wind around 6 mph becoming calm in the evening.
Monday
Sunny and hot, with a high near 99. Heat index values as high as 110. Calm wind becoming northwest around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 77. Light west wind.
Tuesday
Sunny and hot, with a high near 100.
Tuesday Night
Mostly clear, with a low around 76.
Wednesday
Mostly sunny and hot, with a high near 98.
Wednesday Night
Partly cloudy, with a low around 75.
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 73. Chance of precipitation is 40%.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 40%.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
4 Miles SE Poolesville MD
39.1°N 77.36°W (Elev. 292 ft)
39.1°N 77.36°W (Elev. 292 ft)
4:29 pm EDT Jun 21, 2025
6pm EDT Jun 21, 2025-6pm EDT Jun 28, 2025
Additional Resources
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