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

Dangerous Heat to Continue through the Holiday Weekend; Severe Storms on Friday from the Plains to the Mid-Atlantic

Dangerous, record-breaking heat will continue across most of the central and eastern U.S through Friday then focusing across the eastern U.S. through the Independence Day holiday weekend. Peak heat indices of up to 115 degrees are possible. Isolated to scattered severe thunderstorms are possible from the northern/central Plains into the Midwest, Ohio Valley, and Mid-Atlantic Friday. Read More >

Hazardous Weather Conditions

Current conditions at

St Marys County Airport (K2W6)

Lat: 38.32°NLon: 76.55°WElev: 144ft.

Fair

87°F

31°C

Humidity 79%
Wind Speed S 3 mph
Barometer 30.01 in
Dewpoint 80°F (27°C)
Visibility NA
Heat Index102°F (39°C)
Last update 2 Jul 9:15 pm EDT
Extended Forecast for

Lusby MD

Extreme Heat Warning July 3, 10:00am until July 3, 08:00pm
Extreme Heat Warning July 4, 10:00am until July 4, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
Extreme Heat Warning

  • Tonight

    Tonight: Clear, with a low around 81. Southwest wind around 6 mph.

    Low: 81 °F

    Clear

  • Friday

    Friday: Sunny and hot, with a high near 100. Heat index values as high as 111. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 100 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 81. South wind 3 to 5 mph.

    Low: 81 °F

    Mostly Clear

  • Independence Day

    Independence Day: A chance of showers and thunderstorms after 2pm. Increasing clouds and hot, with a high near 102. Heat index values as high as 112. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 40%.

    High: 102 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 77. South wind around 5 mph becoming light and variable after midnight. Chance of precipitation is 50%.

    Low: 77 °F

    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 96. Chance of precipitation is 40%.

    High: 96 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 75. Chance of precipitation is 70%.

    Low: 75 °F

    Showers
    Likely

  • Monday

    Monday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 70%.

    High: 88 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.

    Low: 73 °F

    Showers
    Likely

Detailed Forecast

Tonight
Clear, with a low around 81. Southwest wind around 6 mph.
Friday
Sunny and hot, with a high near 100. Heat index values as high as 111. Calm wind becoming southeast around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 81. South wind 3 to 5 mph.
Independence Day
A chance of showers and thunderstorms after 2pm. Increasing clouds and hot, with a high near 102. Heat index values as high as 112. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 77. South wind around 5 mph becoming light and variable after midnight. Chance of precipitation is 50%.
Sunday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 96. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 75. Chance of precipitation is 70%.
Monday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 70%.
Monday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.
Tuesday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 40%.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 83. Chance of precipitation is 20%.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 20%.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lusby MD
 38.4°N 76.45°W (Elev. 98 ft)
Last Update:
7:53 pm EDT Jul 2, 2026
Forecast Valid:
9pm EDT Jul 2, 2026-6pm EDT Jul 9, 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