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Severe Thunderstorms and Heavy Rainfall; Typhoon Watch in Guam and CNMI

Heavy to excessive rainfall will continue through tonight from the Texas Big Bend region into southern Oklahoma. Scattered damaging wind gusts and a few tornadoes may accompany a line of severe thunderstorms that is expected across the Mid-Atlantic into New England Friday. A Typhoon Watch continues for Guam and CNMI as Tropical Storm Champi will strengthen and approach the islands this weekend. Read More >

Current conditions at

St Marys County Airport (K2W6)

Lat: 38.32°NLon: 76.55°WElev: 144ft.

Overcast

62°F

17°C

Humidity 100%
Wind Speed Calm
Barometer 30.15 in
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 15 Oct 8:15 pm EDT
Extended Forecast for

Mechanicsville MD

  • Tonight

    Tonight: A chance of showers, mainly between 1am and 5am. Cloudy, with a low around 59. East wind around 6 mph. Chance of precipitation is 30%.

    Low: 59 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers, mainly between 7am and 8am. Patchy fog before 10am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 84. Southwest wind 8 to 13 mph. Chance of precipitation is 30%.

    High: 84 °F

    Chance
    Showers and
    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 4am, then showers likely. Low around 48. Northwest wind 13 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 48 °F

    Showers

  • Saturday

    Saturday: A chance of showers, mainly before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 56. Breezy, with a north wind 22 to 24 mph, with gusts as high as 37 mph. Chance of precipitation is 30%.

    High: 56 °F

    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 38. North wind 8 to 15 mph, with gusts as high as 20 mph.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of showers, mainly between 1am and 5am. Cloudy, with a low around 59. East wind around 6 mph. Chance of precipitation is 30%.
Friday
A chance of showers, mainly between 7am and 8am. Patchy fog before 10am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 84. Southwest wind 8 to 13 mph. Chance of precipitation is 30%.
Friday Night
Showers and possibly a thunderstorm before 4am, then showers likely. Low around 48. Northwest wind 13 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of showers, mainly before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 56. Breezy, with a north wind 22 to 24 mph, with gusts as high as 37 mph. Chance of precipitation is 30%.
Saturday Night
Mostly clear, with a low around 38. North wind 8 to 15 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 58.
Sunday Night
Mostly clear, with a low around 40.
Monday
Sunny, with a high near 63.
Monday Night
Partly cloudy, with a low around 45.
Tuesday
Mostly sunny, with a high near 66.
Tuesday Night
Partly cloudy, with a low around 48.
Wednesday
Mostly sunny, with a high near 66.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mechanicsville MD
 38.44°N 76.76°W (Elev. 112 ft)
Last Update:
7:53 pm EDT Oct 15, 2026
Forecast Valid:
8pm EDT Oct 15, 2026-6pm EDT Oct 22, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation