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

Hazardous Weather Conditions

Current conditions at

St Marys County Airport (K2W6)

Lat: 38.32°NLon: 76.55°WElev: 144ft.

Rain Fog/Mist

75°F

24°C

Humidity 100%
Wind Speed SW 3 mph
Barometer 29.88 in
Dewpoint 75°F (24°C)
Visibility 1.00 mi
Last update 17 Aug 9:35 pm EDT
Extended Forecast for

Mechanicsville MD

  • Tonight

    Tonight: Scattered showers and thunderstorms before 2am, then isolated showers between 2am and 3am. Mostly cloudy, with a low around 71. Light northwest wind. Chance of precipitation is 40%.

    Low: 71 °F

    Scattered
    T-storms

  • Tuesday

    Tuesday: A slight chance of showers after 2pm. Sunny, with a high near 87. North wind around 6 mph. Chance of precipitation is 20%.

    High: 87 °F

    Sunny then
    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 88. Calm wind becoming west around 5 mph in the afternoon.

    High: 88 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms between 2am and 5am, then a chance of showers after 5am. Partly cloudy, with a low around 70. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 70 °F

    Mostly Clear
    then Chance
    Showers

  • Thursday

    Thursday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 70%.

    High: 86 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 70%.

    Low: 67 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 60%.

    High: 82 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

    Low: 67 °F

    Showers
    Likely

Detailed Forecast

Tonight
Scattered showers and thunderstorms before 2am, then isolated showers between 2am and 3am. Mostly cloudy, with a low around 71. Light northwest wind. Chance of precipitation is 40%.
Tuesday
A slight chance of showers after 2pm. Sunny, with a high near 87. North wind around 6 mph. Chance of precipitation is 20%.
Tuesday Night
Partly cloudy, with a low around 67. Calm wind.
Wednesday
Mostly sunny, with a high near 88. Calm wind becoming west around 5 mph in the afternoon.
Wednesday Night
A chance of showers and thunderstorms between 2am and 5am, then a chance of showers after 5am. Partly cloudy, with a low around 70. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Thursday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 70%.
Thursday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 70%.
Friday
A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 60%.
Friday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Saturday
A chance of showers. Partly sunny, with a high near 81. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 50%.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 65. Chance of precipitation is 30%.
Monday
A slight chance of showers. Mostly sunny, with a high near 82. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
Mechanicsville MD
 38.44°N 76.76°W (Elev. 112 ft)
Last Update:
7:53 pm EDT Aug 17, 2026
Forecast Valid:
9pm EDT Aug 17, 2026-6pm EDT Aug 24, 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