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.

Overcast and Windy

29°F

-2°C

Humidity 51%
Wind Speed W 26 G 36 mph
Barometer 29.78 in (1010.3 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 30 Dec 2:56 am EST
Extended Forecast for

Olney MD

Wind Advisory December 30, 03:37am until December 30, 12:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory December 30, 03:37am until December 30, 12:00pm

    NOW until 12:00pm Tue

    Wind Advisory

  • Overnight

    Low: 25 °F

    Scattered
    Flurries and
    Windy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 34. Breezy, with a west wind 20 to 25 mph, with gusts as high as 38 mph.

    High: 34 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 24. West wind 8 to 10 mph, with gusts as high as 24 mph.

    Low: 24 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 39. Southwest wind 7 to 11 mph, with gusts as high as 20 mph.

    High: 39 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of snow showers after 1am. Mostly cloudy, with a low around 24. West wind around 7 mph. Chance of precipitation is 20%.

    Low: 24 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • New Year's Day

    New Year's Day: A slight chance of snow showers before 1pm. Mostly sunny, with a high near 31. Chance of precipitation is 20%.

    High: 31 °F

    Slight Chance
    Snow Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 19.

    Low: 19 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 38.

    High: 38 °F

    Partly Sunny

Detailed Forecast

Overnight
Scattered flurries. Partly cloudy, with a low around 25. Windy, with a west wind around 26 mph, with gusts as high as 34 mph.
Tuesday
Mostly sunny, with a high near 34. Breezy, with a west wind 20 to 25 mph, with gusts as high as 38 mph.
Tuesday Night
Mostly cloudy, with a low around 24. West wind 8 to 10 mph, with gusts as high as 24 mph.
Wednesday
Partly sunny, with a high near 39. Southwest wind 7 to 11 mph, with gusts as high as 20 mph.
Wednesday Night
A slight chance of snow showers after 1am. Mostly cloudy, with a low around 24. West wind around 7 mph. Chance of precipitation is 20%.
New Year's Day
A slight chance of snow showers before 1pm. Mostly sunny, with a high near 31. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 19.
Friday
Partly sunny, with a high near 38.
Friday Night
Mostly cloudy, with a low around 26.
Saturday
Partly sunny, with a high near 40.
Saturday Night
Partly cloudy, with a low around 23.
Sunday
Mostly sunny, with a high near 39.
Sunday Night
Mostly cloudy, with a low around 25.
Monday
Partly sunny, with a high near 42.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Olney MD
 39.16°N 77.06°W (Elev. 486 ft)
Last Update:
12:53 am EST Dec 30, 2025
Forecast Valid:
3am EST Dec 30, 2025-6pm EST Jan 5, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation