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

Hot Temperatures in the Northwest U.S.; Excessive Rainfall Potential in the Southwest U.S.

Hot to extremely hot daytime temperatures remain in place across coastal southern California and the interior Northwest, with the Northwest carrying the potential for record-breaking high temperatures. A combination of monsoonal moisture and tropical moisture ahead of tropical cyclone Lorena will bring a marginal to slight risk of excessive rainfall across the southwest U.S. this week. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

59°F

15°C

Humidity 100%
Wind Speed Calm
Barometer 30.05 in (1018.9 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 2 Sep 10:56 pm EDT
Extended Forecast for

Barnesville MD

  • Tonight

    Tonight: Mostly clear, with a low around 52. Calm wind.

    Low: 52 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 80. Calm wind becoming south around 5 mph in the afternoon.

    High: 80 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60. South wind around 6 mph.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85. South wind 6 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.

    High: 85 °F

    Sunny then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 61. South wind 3 to 7 mph. Chance of precipitation is 30%.

    Low: 61 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers after 2pm. Mostly sunny, with a high near 84. Chance of precipitation is 40%.

    High: 84 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers before 2am. Mostly cloudy, with a low around 57. Chance of precipitation is 30%.

    Low: 57 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 52. Calm wind.
Wednesday
Sunny, with a high near 80. Calm wind becoming south around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 60. South wind around 6 mph.
Thursday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85. South wind 6 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 61. South wind 3 to 7 mph. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 86.
Friday Night
Partly cloudy, with a low around 64.
Saturday
A chance of showers after 2pm. Mostly sunny, with a high near 84. Chance of precipitation is 40%.
Saturday Night
A chance of showers before 2am. Mostly cloudy, with a low around 57. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 75.
Sunday Night
Mostly clear, with a low around 52.
Monday
Sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 53.
Tuesday
Partly sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Barnesville MD
 39.21°N 77.37°W (Elev. 499 ft)
Last Update:
10:29 pm EDT Sep 2, 2025
Forecast Valid:
11pm EDT Sep 2, 2025-6pm EDT Sep 9, 2025
 
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