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

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Mostly Cloudy

73°F

23°C

Humidity NA
Wind Speed Calm
Barometer 29.93 in (1014.5 mb)
Dewpoint N/A
Visibility 10.00 mi
Last update 17 Jul 4:56 am EDT
Extended Forecast for

Wheaton-Glenmont MD

  • Today

    Today: Mostly sunny, with a high near 94. Heat index values as high as 103. West wind 7 to 10 mph, with gusts as high as 20 mph.

    High: 94 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 74. Southwest wind around 7 mph becoming northwest after midnight. Chance of precipitation is 30%.

    Low: 74 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Northwest wind around 7 mph. Chance of precipitation is 20%.

    High: 87 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms, then a chance of showers after 2am. Mostly cloudy, with a low around 72. Calm wind. Chance of precipitation is 30%.

    Low: 72 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 85. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 60%.

    High: 85 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.

    Low: 72 °F

    Showers
    Likely then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 50%.

    High: 89 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 69. Chance of precipitation is 30%.

    Low: 69 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 94. Heat index values as high as 103. West wind 7 to 10 mph, with gusts as high as 20 mph.
Tonight
A chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 74. Southwest wind around 7 mph becoming northwest after midnight. Chance of precipitation is 30%.
Friday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Northwest wind around 7 mph. Chance of precipitation is 20%.
Friday Night
A slight chance of showers and thunderstorms, then a chance of showers after 2am. Mostly cloudy, with a low around 72. Calm wind. Chance of precipitation is 30%.
Saturday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 85. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 60%.
Saturday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.
Sunday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 50%.
Sunday Night
A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 69. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 84.
Monday Night
Partly cloudy, with a low around 67.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
Partly cloudy, with a low around 68.
Wednesday
A chance of showers. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Wheaton-Glenmont MD
 39.07°N 77.08°W (Elev. 299 ft)
Last Update:
4:30 am EDT Jul 17, 2025
Forecast Valid:
5am EDT Jul 17, 2025-6pm EDT Jul 23, 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