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.

Light Snow

27°F

-3°C

Humidity 66%
Wind Speed Vrbl 6 mph
Barometer 30.26 in (1026.8 mb)
Dewpoint 17°F (-8°C)
Visibility 7.00 mi
Wind Chill20°F (-7°C)
Last update 5 Dec 5:56 am EST
Extended Forecast for

Olney MD

Winter Weather Advisory December 5, 06:57am until December 5, 04:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory December 5, 06:57am until December 5, 04:00pm

    NOW until 4:00pm Fri

    Winter Weather Advisory

  • Today

    High: 32 °F

    Snow Likely
    then Chance
    Snow

  • Tonight

    Tonight: Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 22. Calm wind.

    Low: 22 °F

    Patchy Fog

  • Saturday

    Saturday: Partly sunny, with a high near 41. Calm wind becoming southwest around 5 mph.

    High: 41 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 24. Calm wind.

    Low: 24 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 41. Calm wind becoming southeast around 5 mph.

    High: 41 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 33.

    High: 33 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 17.

    Low: 17 °F

    Mostly Clear

Detailed Forecast

Today
Snow likely, mainly before 10am. Cloudy, with a high near 32. East wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 22. Calm wind.
Saturday
Partly sunny, with a high near 41. Calm wind becoming southwest around 5 mph.
Saturday Night
Partly cloudy, with a low around 24. Calm wind.
Sunday
Mostly cloudy, with a high near 41. Calm wind becoming southeast around 5 mph.
Sunday Night
Mostly cloudy, with a low around 24.
Monday
Mostly sunny, with a high near 33.
Monday Night
Mostly clear, with a low around 17.
Tuesday
Mostly sunny, with a high near 36.
Tuesday Night
Mostly cloudy, with a low around 28.
Wednesday
Mostly cloudy, with a high near 45.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 34. Chance of precipitation is 40%.
Thursday
A chance of rain. Partly sunny, with a high near 42. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Olney MD
 39.16°N 77.06°W (Elev. 486 ft)
Last Update:
6:53 am EST Dec 5, 2025
Forecast Valid:
6am EST Dec 5, 2025-6pm EST Dec 11, 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