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

Tracking Atmospheric River for the West Coast; Space Weather Storming Continues

An atmospheric river will bring threats of gusty to high winds and heavy rainfall to California mainly Thursday into Saturday which may bring areas of flooding and wind damage. Heavy snow will be possible over the Sierra Nevada mountains Thursday into Friday associated with the atmospheric river. Minor to severe geomagnetic storming (space weather) is expected to continue into early Thursday. Read More >

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

46°F

8°C

Humidity 50%
Wind Speed W 12 mph
Barometer 29.97 in (1016.1 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 13 Nov 2:56 am EST
Extended Forecast for

Green Valley MD

  • Overnight

    Overnight: Mostly clear, with a low around 35. West wind around 8 mph.

    Low: 35 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 55. Northwest wind 7 to 16 mph, with gusts as high as 29 mph.

    High: 55 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 32. Northwest wind 3 to 6 mph.

    Low: 32 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 53. Northwest wind 5 to 10 mph, with gusts as high as 18 mph.

    High: 53 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 32. Light north wind.

    Low: 32 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 57.

    High: 57 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of rain. Mostly cloudy, with a low around 51. Chance of precipitation is 50%.

    Low: 51 °F

    Chance Rain

  • Sunday

    Sunday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 35. West wind around 8 mph.
Thursday
Sunny, with a high near 55. Northwest wind 7 to 16 mph, with gusts as high as 29 mph.
Thursday Night
Mostly clear, with a low around 32. Northwest wind 3 to 6 mph.
Friday
Sunny, with a high near 53. Northwest wind 5 to 10 mph, with gusts as high as 18 mph.
Friday Night
Partly cloudy, with a low around 32. Light north wind.
Saturday
Partly sunny, with a high near 57.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 51. Chance of precipitation is 50%.
Sunday
Mostly sunny, with a high near 61.
Sunday Night
Mostly clear, with a low around 36.
Monday
Sunny, with a high near 51.
Monday Night
Partly cloudy, with a low around 32.
Tuesday
A chance of rain. Partly sunny, with a high near 50. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
Partly sunny, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Green Valley MD
 39.33°N 77.24°W (Elev. 607 ft)
Last Update:
12:30 am EST Nov 13, 2025
Forecast Valid:
3am EST Nov 13, 2025-6pm EST Nov 19, 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