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 >

Current conditions at

Garrett County Airport (K2G4)

Lat: 39.58°NLon: 79.34°WElev: 2933ft.

Fair

68°F

20°C

Humidity 100%
Wind Speed N 5 mph
Barometer 30.08 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 4 Jul 9:35 pm EDT
Extended Forecast for

Grantsville MD

  • Tonight

    Tonight: Showers and thunderstorms likely before midnight, then a chance of showers between midnight and 2am. Some of the storms could be severe. Patchy fog before 3am, then patchy fog after 4am. Otherwise, mostly cloudy, with a low around 68. Light southwest wind. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Severe
    Thunderstorms
    then Chance
    Showers and
    Patchy Fog

  • Sunday

    Sunday: Showers and thunderstorms, mainly before 5pm, then showers likely and possibly a thunderstorm after 5pm. High near 83. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 83 °F

    Chance
    Showers then
    T-storms

  • Sunday Night

    Sunday Night: Showers and thunderstorms before 2am, then showers likely. Low around 64. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 64 °F

    Showers

  • Monday

    Monday: Showers likely, then showers and possibly a thunderstorm after 8am. High near 77. Light and variable wind. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 77 °F

    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 11pm, then showers likely. Low around 63. Light and variable wind. Chance of precipitation is 80%.

    Low: 63 °F

    Showers

  • Tuesday

    Tuesday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 76. Chance of precipitation is 70%.

    High: 76 °F

    Chance
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 8pm, then a slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.

    Low: 61 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 20%.

    High: 79 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

Detailed Forecast

Tonight
Showers and thunderstorms likely before midnight, then a chance of showers between midnight and 2am. Some of the storms could be severe. Patchy fog before 3am, then patchy fog after 4am. Otherwise, mostly cloudy, with a low around 68. Light southwest wind. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers and thunderstorms, mainly before 5pm, then showers likely and possibly a thunderstorm after 5pm. High near 83. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Showers and thunderstorms before 2am, then showers likely. Low around 64. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday
Showers likely, then showers and possibly a thunderstorm after 8am. High near 77. Light and variable wind. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Showers and possibly a thunderstorm before 11pm, then showers likely. Low around 63. Light and variable wind. Chance of precipitation is 80%.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 76. Chance of precipitation is 70%.
Tuesday Night
Showers likely and possibly a thunderstorm before 8pm, then a slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Wednesday
A slight chance of showers after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 63.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 82. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 30%.
Friday
Showers and thunderstorms likely. Mostly cloudy, with a high near 80. Chance of precipitation is 70%.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 78. Chance of precipitation is 50%.
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ABOUT THIS FORECAST

 
Point Forecast:
Grantsville MD
 39.7°N 79.17°W (Elev. 2201 ft)
Last Update:
9:12 pm EDT Jul 4, 2026
Forecast Valid:
9pm 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