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

St Marys County Airport (K2W6)

Lat: 38.32°NLon: 76.55°WElev: 144ft.

Mostly Cloudy

78°F

26°C

Humidity 58%
Wind Speed Vrbl 3 mph
Barometer 30.04 in
Dewpoint 62°F (17°C)
Visibility NA
Heat Index80°F (27°C)
Last update 25 Jul 3:55 pm EDT
Extended Forecast for

3 Miles SW Port Republic MD

  • Tonight

    Tonight: Mostly clear, with a low around 66. Light and variable wind.

    Low: 66 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 85. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, mainly after 2am. Partly cloudy, with a low around 67. Light south wind. Chance of precipitation is 30%.

    Low: 67 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: A chance of showers before 8am, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 50%.

    High: 86 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. South wind 5 to 7 mph. Chance of precipitation is 40%.

    Low: 70 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 87. Chance of precipitation is 80%.

    High: 87 °F

    Chance
    Showers then
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Low around 69. Chance of precipitation is 80%.

    Low: 69 °F

    T-storms then
    Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 20%.

    High: 85 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 68. Chance of precipitation is 20%.

    Low: 68 °F

    Slight Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 66. Light and variable wind.
Sunday
Sunny, with a high near 85. Calm wind becoming northeast around 5 mph in the afternoon.
Sunday Night
A chance of showers and thunderstorms, mainly after 2am. Partly cloudy, with a low around 67. Light south wind. Chance of precipitation is 30%.
Monday
A chance of showers before 8am, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 50%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. South wind 5 to 7 mph. Chance of precipitation is 40%.
Tuesday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 87. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Low around 69. Chance of precipitation is 80%.
Wednesday
A slight chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 20%.
Wednesday Night
A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 68. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 84.
Thursday Night
Mostly clear, with a low around 68.
Friday
Sunny, with a high near 86.
Friday Night
Partly cloudy, with a low around 70.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Port Republic MD
 38.46°N 76.58°W (Elev. 98 ft)
Last Update:
4:03 pm EDT Jul 25, 2026
Forecast Valid:
4pm EDT Jul 25, 2026-6pm EDT Aug 1, 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