Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Overcast

76°F

24°C

Humidity 91%
Wind Speed SE 9 mph
Barometer 29.98 in (1016.1 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index76°F (24°C)
Last update 16 Aug 4:56 pm EDT
Extended Forecast for

Ashton MD

Flood Watch August 16, 07:00pm until August 17, 03:00am
Severe T-storm Watch until August 16, 11:00pm
Click here for hazard details and duration
Flood Watch
Severe T-storm Watch
  •  
    Severe T-storm Watch until August 16, 11:00pm

    NOW until 11:00pm Sun

    Severe T-storm Watch

  • This Afternoon

    High: 77 °F

    Severe
    Thunderstorms

  • Tonight

    Tonight: Showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 2am, then a slight chance of showers after 2am. Some of the storms could be severe.  Low around 70. Southwest wind 5 to 7 mph, with gusts as high as 21 mph.  Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 70 °F

    Severe
    Thunderstorms

  • Monday

    Monday: A chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 87. Northwest wind 6 to 8 mph.  Chance of precipitation is 30%.

    High: 87 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 68. Northwest wind 3 to 5 mph.  Chance of precipitation is 30%.

    Low: 68 °F

    Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 84. North wind 5 to 7 mph.

    High: 84 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 2am.  Partly cloudy, with a low around 69. Chance of precipitation is 20%.

    Low: 69 °F

    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms. Some of the storms could be severe. Mostly cloudy, with a high near 77. South wind around 7 mph. Chance of precipitation is 50%.
Tonight
Showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 2am, then a slight chance of showers after 2am. Some of the storms could be severe. Low around 70. Southwest wind 5 to 7 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Monday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Northwest wind 6 to 8 mph. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 68. Northwest wind 3 to 5 mph. Chance of precipitation is 30%.
Tuesday
Sunny, with a high near 84. North wind 5 to 7 mph.
Tuesday Night
Mostly clear, with a low around 65.
Wednesday
Sunny, with a high near 87.
Wednesday Night
A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 69. Chance of precipitation is 20%.
Thursday
A slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.
Friday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 78. Chance of precipitation is 20%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.
Saturday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 80. Chance of precipitation is 20%.
Saturday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 20%.
Sunday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Ashton MD
 39.15°N 76.98°W (Elev. 381 ft)
5:29 pm EDT Aug 16, 2026
5pm EDT Aug 16, 2026-6pm EDT Aug 23, 2026
 
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Additional Resources

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