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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

St Marys County Airport (K2W6)

Lat: 38.32°NLon: 76.55°WElev: 144ft.

Overcast

72°F

22°C

Humidity 90%
Wind Speed Vrbl 5 mph
Barometer 30.07 in
Dewpoint 69°F (21°C)
Visibility 7.00 mi
Last update 19 Sep 7:55 pm EDT
Extended Forecast for

3 Miles NW Tall Timbers MD

  • Tonight

    Tonight: Partly cloudy, with a low around 72. Southeast wind 10 to 13 mph.

    Low: 72 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 82. South wind around 10 mph.

    High: 82 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 71. South wind 5 to 8 mph becoming west after midnight. Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: A slight chance of showers before 8am, then a chance of showers after 2pm. Mostly cloudy, with a high near 75. Northeast wind 9 to 11 mph. Chance of precipitation is 30%.

    High: 75 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Cloudy, with a low around 70. Northeast wind 11 to 13 mph. Chance of precipitation is 50%.

    Low: 70 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 2pm. Cloudy, with a high near 72. Chance of precipitation is 50%.

    High: 72 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Breezy. Chance of precipitation is 40%.

    Low: 64 °F

    Chance
    Showers and
    Breezy

  • Wednesday

    Wednesday: A chance of showers. Mostly cloudy, with a high near 70. Breezy. Chance of precipitation is 40%.

    High: 70 °F

    Chance
    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: A chance of showers. Mostly cloudy, with a low around 64. Windy. Chance of precipitation is 40%.

    Low: 64 °F

    Chance
    Showers and
    Windy

Detailed Forecast

Tonight
Partly cloudy, with a low around 72. Southeast wind 10 to 13 mph.
Sunday
Partly sunny, with a high near 82. South wind around 10 mph.
Sunday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 71. South wind 5 to 8 mph becoming west after midnight. Chance of precipitation is 30%.
Monday
A slight chance of showers before 8am, then a chance of showers after 2pm. Mostly cloudy, with a high near 75. Northeast wind 9 to 11 mph. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms. Cloudy, with a low around 70. Northeast wind 11 to 13 mph. Chance of precipitation is 50%.
Tuesday
A chance of showers, with thunderstorms also possible after 2pm. Cloudy, with a high near 72. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Breezy. Chance of precipitation is 40%.
Wednesday
A chance of showers. Mostly cloudy, with a high near 70. Breezy. Chance of precipitation is 40%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 64. Windy. Chance of precipitation is 40%.
Thursday
A chance of showers. Mostly cloudy, with a high near 68. Breezy. Chance of precipitation is 40%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 62. Breezy. Chance of precipitation is 40%.
Friday
A chance of showers. Partly sunny, with a high near 68. Chance of precipitation is 30%.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 61. Chance of precipitation is 20%.
Saturday
A slight chance of showers. Mostly sunny, with a high near 70. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Tall Timbers MD
 38.19°N 76.57°W (Elev. 0 ft)
Last Update:
7:53 pm EDT Sep 19, 2026
Forecast Valid:
8pm EDT Sep 19, 2026-6pm EDT Sep 26, 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