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.

Fair

79°F

26°C

Humidity 42%
Wind Speed S 5 mph
Barometer 29.94 in (1014.5 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 15 Apr 10:56 pm EDT
Extended Forecast for

Gaithersburg MD

  • Tonight

    Tonight: Mostly cloudy, with a low around 68. Southwest wind around 6 mph becoming calm after midnight.

    Low: 68 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 90. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 90 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers. Mostly cloudy, with a low around 67. Southwest wind around 7 mph becoming west after midnight. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers. Partly sunny, with a high near 82. Northwest wind 6 to 8 mph. Chance of precipitation is 30%.

    High: 82 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 60. Light northeast wind.

    Low: 60 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of showers after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 20%.

    High: 85 °F

    Sunny then
    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers after 8pm. Mostly cloudy, with a low around 52. Chance of precipitation is 50%.

    Low: 52 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers likely, mainly before 2pm. Mostly cloudy, with a high near 65. Chance of precipitation is 60%.

    High: 65 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers before 8pm. Partly cloudy, with a low around 39. Chance of precipitation is 30%.

    Low: 39 °F

    Chance
    Showers then
    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 68. Southwest wind around 6 mph becoming calm after midnight.
Thursday
Mostly sunny, with a high near 90. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 67. Southwest wind around 7 mph becoming west after midnight. Chance of precipitation is 30%.
Friday
A chance of showers. Partly sunny, with a high near 82. Northwest wind 6 to 8 mph. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 60. Light northeast wind.
Saturday
A slight chance of showers after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 20%.
Saturday Night
A chance of showers after 8pm. Mostly cloudy, with a low around 52. Chance of precipitation is 50%.
Sunday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 65. Chance of precipitation is 60%.
Sunday Night
A chance of showers before 8pm. Partly cloudy, with a low around 39. Chance of precipitation is 30%.
Monday
Sunny, with a high near 55.
Monday Night
Mostly clear, with a low around 35.
Tuesday
Sunny, with a high near 67.
Tuesday Night
Mostly clear, with a low around 51.
Wednesday
Mostly sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Gaithersburg MD
 39.15°N 77.21°W (Elev. 443 ft)
Last Update:
10:54 pm EDT Apr 15, 2026
Forecast Valid:
11pm EDT Apr 15, 2026-6pm EDT Apr 22, 2026
 
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