National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heat Wave and Severe Thunderstorms this Independence Day

A prolonged, dangerous heat wave will persist through the Independence Day weekend across the Ohio Valley, Midwest, and Mid-Atlantic. Numerous temperature records are expected. Clusters of severe thunderstorms will move across parts of the Allegheny Plateau into Mid Atlantic this Independence Day, with potential for widespread damaging winds. Additional severe thunderstorms in the Great Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Patuxent River, Naval Air Station (KNHK)

Lat: 38.28°NLon: 76.41°WElev: 39ft.

A Few Clouds

94°F

34°C

Humidity 56%
Wind Speed SE 12 mph
Barometer 29.86 in (1011.2 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index107°F (42°C)
Last update 4 Jul 5:52 pm EDT
Extended Forecast for

Dowell MD

Severe T-storm Watch until July 4, 10:00pm
Extreme Heat Warning July 4, 06:07pm until July 4, 09:00pm
Click here for hazard details and duration
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  •  
    Severe T-storm Watch until July 4, 10:00pm
    Extreme Heat Warning July 4, 06:07pm until July 4, 09:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Tonight

    Low: 77 °F

    Severe
    Thunderstorms
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 93. Heat index values as high as 106. Calm wind becoming southeast 5 to 8 mph in the afternoon.

    High: 93 °F

    Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, mainly before midnight. Increasing clouds, with a low around 75. South wind 5 to 9 mph becoming northeast in the evening. Chance of precipitation is 40%.

    Low: 75 °F

    Chance
    T-storms

  • Monday

    Monday: Showers likely, then showers and possibly a thunderstorm after 11am. High near 90. Heat index values as high as 100. East wind 5 to 7 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 90 °F

    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 72. East wind 3 to 6 mph. Chance of precipitation is 80%.

    Low: 72 °F

    Showers

  • Tuesday

    Tuesday: Showers likely, with thunderstorms also possible after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.

    High: 87 °F

    Showers
    Likely then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

Detailed Forecast

Tonight
Showers and thunderstorms before midnight, then a slight chance of showers between midnight and 3am. Some of the storms could be severe. Low around 77. West wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Sunny, with a high near 93. Heat index values as high as 106. Calm wind becoming southeast 5 to 8 mph in the afternoon.
Sunday Night
A chance of showers and thunderstorms, mainly before midnight. Increasing clouds, with a low around 75. South wind 5 to 9 mph becoming northeast in the evening. Chance of precipitation is 40%.
Monday
Showers likely, then showers and possibly a thunderstorm after 11am. High near 90. Heat index values as high as 100. East wind 5 to 7 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Showers and possibly a thunderstorm. Low around 72. East wind 3 to 6 mph. Chance of precipitation is 80%.
Tuesday
Showers likely, with thunderstorms also possible after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Tuesday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 86.
Wednesday Night
Partly cloudy, with a low around 72.
Thursday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 20%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 76. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 94. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 76. Chance of precipitation is 40%.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Dowell MD
 38.36°N 76.43°W (Elev. 52 ft)
Last Update:
4:53 pm EDT Jul 4, 2026
Forecast Valid:
6pm EDT Jul 4, 2026-6pm EDT Jul 11, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation