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

Heavy Rain Across the Southern US; Unsettled Pattern in the Pacific Northwest

A storm system will bring heavy rainfall, thunderstorms, and flooding threats to portions of the Southern Plains Friday, the Lower Mississippi Valley Saturday, and the Southeast into the Mid-Atlantic on Sunday. High elevation snow and mixed precipitation and rain in the lower elevations will impact the Pacific Northwest this weekend before a stronger system moves in early next week. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Partly Cloudy

28°F

-2°C

Humidity 63%
Wind Speed Vrbl 5 mph
Barometer 30.17 in (1023.7 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 12 Feb 11:56 pm EST
Extended Forecast for

Olney MD

  • Overnight

    Overnight: Mostly clear, with a low around 22. Northwest wind around 9 mph, with gusts as high as 21 mph.

    Low: 22 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 37. Northwest wind 7 to 10 mph, with gusts as high as 20 mph.

    High: 37 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 25. Light west wind.

    Low: 25 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 50. West wind 5 to 8 mph.

    High: 50 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 30. Calm wind.

    Low: 30 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain before 1pm, then rain and snow likely. Cloudy, with a high near 41. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 41 °F

    Chance Rain
    then
    Rain/Snow
    Likely

  • Sunday Night

    Sunday Night: Rain and snow likely, mainly before 1am. Cloudy, with a low around 33. Chance of precipitation is 60%.

    Low: 33 °F

    Rain/Snow
    Likely

  • Washington's Birthday

    Washington's Birthday: Mostly cloudy, with a high near 46.

    High: 46 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 22. Northwest wind around 9 mph, with gusts as high as 21 mph.
Friday
Sunny, with a high near 37. Northwest wind 7 to 10 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 25. Light west wind.
Saturday
Sunny, with a high near 50. West wind 5 to 8 mph.
Saturday Night
Mostly cloudy, with a low around 30. Calm wind.
Sunday
A chance of rain before 1pm, then rain and snow likely. Cloudy, with a high near 41. Chance of precipitation is 60%. Little or no snow accumulation expected.
Sunday Night
Rain and snow likely, mainly before 1am. Cloudy, with a low around 33. Chance of precipitation is 60%.
Washington's Birthday
Mostly cloudy, with a high near 46.
Monday Night
Mostly cloudy, with a low around 33.
Tuesday
Mostly cloudy, with a high near 52.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
A chance of rain. Cloudy, with a high near 57. Chance of precipitation is 30%.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 42. Chance of precipitation is 40%.
Thursday
A chance of rain. Partly sunny, with a high near 56. 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:
9:53 pm EST Feb 12, 2026
Forecast Valid:
12am EST Feb 13, 2026-6pm EST Feb 19, 2026
 
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Additional Resources

Radar & Satellite Image

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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