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

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Overcast

70°F

21°C

Humidity NA
Wind Speed Calm
Barometer 30.13 in (1021.1 mb)
Dewpoint N/A
Visibility 10.00 mi
Last update 12 Aug 3:56 am EDT
Extended Forecast for

Garrett Park MDSimilar City Names

  • Today

    Today: A chance of showers and thunderstorms, mainly between 4pm and 5pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 90. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 30%.

    High: 90 °F

    Patchy Fog
    then Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms between 7pm and 9pm. Partly cloudy, with a low around 73. South wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 73 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: 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 91. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 91 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday 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 73. Light southwest wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 73 °F

    Showers
    Likely then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 90. Northwest wind 3 to 6 mph. Chance of precipitation is 30%.

    High: 90 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 72. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms, mainly between 4pm and 5pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 90. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 30%.
Tonight
A slight chance of showers and thunderstorms between 7pm and 9pm. Partly cloudy, with a low around 73. South wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.
Wednesday
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 91. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday 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 73. Light southwest wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 90. Northwest wind 3 to 6 mph. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 72. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 90.
Friday Night
Mostly clear, with a low around 71.
Saturday
Mostly sunny, with a high near 91.
Saturday Night
Mostly clear, with a low around 71.
Sunday
Sunny, with a high near 95.
Sunday Night
Mostly clear, with a low around 72.
Monday
Mostly sunny, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
Garrett Park MDSimilar City Names
 39.03°N 77.09°W (Elev. 249 ft)
Last Update:
4:30 am EDT Aug 12, 2025
Forecast Valid:
4am EDT Aug 12, 2025-6pm EDT Aug 18, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation