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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

80°F

27°C

Humidity 67%
Wind Speed Calm
Barometer 30.06 in (1018.9 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 28 Aug 6:56 pm EDT
Extended Forecast for

2 Miles SE Mount Airy MD

  • Tonight

    Tonight: Mostly clear, with a low around 61. North wind around 5 mph becoming calm.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 81. Northeast wind around 6 mph becoming calm in the afternoon.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers between 1am and 2am. Increasing clouds, with a low around 66. Light and variable wind. Chance of precipitation is 20%.

    Low: 66 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 86. Southwest wind 5 to 7 mph.

    High: 86 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 70. Light south wind.

    Low: 70 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 73.

    Low: 73 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 61. North wind around 5 mph becoming calm.
Saturday
Sunny, with a high near 81. Northeast wind around 6 mph becoming calm in the afternoon.
Saturday Night
A slight chance of showers between 1am and 2am. Increasing clouds, with a low around 66. Light and variable wind. Chance of precipitation is 20%.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 86. Southwest wind 5 to 7 mph.
Sunday Night
Partly cloudy, with a low around 70. Light south wind.
Monday
Mostly sunny, with a high near 89.
Monday Night
Partly cloudy, with a low around 71.
Tuesday
Mostly sunny, with a high near 91.
Tuesday Night
Partly cloudy, with a low around 73.
Wednesday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Chance of precipitation is 20%.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 73. Chance of precipitation is 20%.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
Friday
A slight chance of showers. Mostly sunny, with a high near 85. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Mount Airy MD
 39.34°N 77.12°W (Elev. 699 ft)
Last Update:
4:53 pm EDT Aug 28, 2026
Forecast Valid:
7pm EDT Aug 28, 2026-6pm EDT Sep 4, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation