Severe Thunderstorms and Heavy Rain Across the Ohio Valley;

Severe thunderstorms with damaging wind gusts will be possible from the mid-Mississippi Valley into parts of the Ohio Valley and central Appalachians. Heavy rain associated with these storms may lead to considerable flash and urban flooding impacts across portions of the Ohio Valley. Mid-summer heat persists from the Central Plains to the Southeast. Read More >

Current conditions at

St Marys County Airport (K2W6)

Lat: 38.32°NLon: 76.55°WElev: 144ft.

Fair

80°F

27°C

Humidity 85%
Wind Speed Calm
Barometer 29.88 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 11 Aug 7:55 pm EDT
Extended Forecast for

Port Republic MD

  • Tonight

    Tonight: A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am.  Cloudy, with a low around 72. West wind 3 to 6 mph.  Chance of precipitation is 40%.

    Low: 72 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Cloudy, then gradually becoming mostly sunny, with a high near 86. Northwest wind 3 to 8 mph.

    High: 86 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: A slight chance of showers between 1am and 2am.  Partly cloudy, with a low around 72. Calm wind becoming southwest around 5 mph after midnight.  Chance of precipitation is 20%.

    Low: 72 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers after 2pm.  Increasing clouds, with a high near 88. West wind around 5 mph.  Chance of precipitation is 30%.

    High: 88 °F

    Sunny then
    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a slight chance of showers after 2am.  Mostly cloudy, with a low around 73. Light and variable wind becoming west around 5 mph after midnight.  Chance of precipitation is 60%.

    Low: 73 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 2pm.  Partly sunny, with a high near 86. Chance of precipitation is 30%.

    High: 86 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of thunderstorms before 8pm.  Partly cloudy, with a low around 70. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Cloudy, with a low around 72. West wind 3 to 6 mph. Chance of precipitation is 40%.
Wednesday
Cloudy, then gradually becoming mostly sunny, with a high near 86. Northwest wind 3 to 8 mph.
Wednesday Night
A slight chance of showers between 1am and 2am. Partly cloudy, with a low around 72. Calm wind becoming southwest around 5 mph after midnight. Chance of precipitation is 20%.
Thursday
A chance of showers after 2pm. Increasing clouds, with a high near 88. West wind around 5 mph. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 73. Light and variable wind becoming west around 5 mph after midnight. Chance of precipitation is 60%.
Friday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 30%.
Friday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 70. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
Partly cloudy, with a low around 69.
Sunday
A chance of showers, mainly after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 74. Chance of precipitation is 40%.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 30%.
Tuesday
Sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Port Republic MD
 38.5°N 76.52°W (Elev. 98 ft)
7:53 pm EDT Aug 11, 2026
8pm EDT Aug 11, 2026-6pm EDT Aug 18, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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