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

Risks of Severe Thunderstorms and Excessive Rainfall in the Central U.S.; Fire Weather Concerns in Alaska and Southwest

An expansive storm system will bring widespread storms with a threat for flash flooding and severe weather to much of the central to eastern U.S. into early this week. Critical fire weather conditions are expected across interior Alaska this weekend. Elevated fire conditions also expected in the Southwest U.S.. Conditions will remain uncomfortably hot across the southern Plains and the Southeast. Read More >

Current conditions at

Patuxent River, Naval Air Station (KNHK)

Lat: 38.28°NLon: 76.41°WElev: 39ft.

Fair

75°F

24°C

Humidity 54%
Wind Speed SW 8 mph
Barometer 29.86 in (1011.2 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 20 Jun 9:52 pm EDT
Extended Forecast for

Great Mills MD

  • Tonight

    Tonight: Mostly cloudy, with a low around 67. Light northwest wind.

    Low: 67 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 89. West wind 3 to 7 mph.

    High: 89 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 72. South wind 3 to 5 mph.

    Low: 72 °F

    Partly Cloudy

  • Monday

    Monday: Showers likely and possibly a thunderstorm after 2pm. Increasing clouds, with a high near 95. South wind 8 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 95 °F

    Mostly Sunny
    then Showers
    Likely

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 72. South wind 7 to 10 mph. Chance of precipitation is 60%.

    Low: 72 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 40%.

    High: 88 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 68. Chance of precipitation is 30%.

    Low: 68 °F

    Chance
    Showers then
    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers after 2am. Mostly clear, with a low around 69. Chance of precipitation is 20%.

    Low: 69 °F

    Mostly Clear
    then Slight
    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 67. Light northwest wind.
Sunday
Mostly sunny, with a high near 89. West wind 3 to 7 mph.
Sunday Night
Partly cloudy, with a low around 72. South wind 3 to 5 mph.
Monday
Showers likely and possibly a thunderstorm after 2pm. Increasing clouds, with a high near 95. South wind 8 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 72. South wind 7 to 10 mph. Chance of precipitation is 60%.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 68. Chance of precipitation is 30%.
Wednesday
Sunny, with a high near 85.
Wednesday Night
A slight chance of showers after 2am. Mostly clear, with a low around 69. Chance of precipitation is 20%.
Thursday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 40%.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 71. Chance of precipitation is 30%.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Great Mills MD
 38.27°N 76.5°W (Elev. 98 ft)
Last Update:
10:52 pm EDT Jun 20, 2026
Forecast Valid:
11pm EDT Jun 20, 2026-6pm EDT Jun 27, 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