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

Tracking Atmospheric River for California; Record Temperatures Further East

An atmospheric river will bring gusty to high winds, moderate to heavy rainfall, and potential flooding to California today through Saturday. Heavy snow will be possible over the Sierra Nevada mountains into Friday associated with this atmospheric river. East of these impacts dozens of record high maximum and high minimum temperatures may be broken or tied today and Friday. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

44°F

7°C

Humidity 53%
Wind Speed W 6 mph
Barometer 30.03 in (1018.3 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 13 Nov 7:56 am EST
Extended Forecast for

3 Miles S Unionville MD

  • Today

    Today: Sunny, with a high near 55. Northwest wind 8 to 15 mph, with gusts as high as 28 mph.

    High: 55 °F

    Sunny

  • Tonight

    Tonight: 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. Light west wind becoming northwest 5 to 9 mph in the morning.

    High: 53 °F

    Sunny

  • Friday Night

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

    Low: 32 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of rain after 1pm. Partly sunny, with a high near 56. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 56 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Saturday Night

    Saturday Night: Rain likely, mainly before 1am. Cloudy, with a low around 51. Chance of precipitation is 60%.

    Low: 51 °F

    Rain Likely

  • Sunday

    Sunday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Sunday Night

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

    Low: 36 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 50.

    High: 50 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 55. Northwest wind 8 to 15 mph, with gusts as high as 28 mph.
Tonight
Mostly clear, with a low around 32. Northwest wind 3 to 6 mph.
Friday
Sunny, with a high near 53. Light west wind becoming northwest 5 to 9 mph in the morning.
Friday Night
Partly cloudy, with a low around 32. Calm wind.
Saturday
A slight chance of rain after 1pm. Partly sunny, with a high near 56. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 20%.
Saturday Night
Rain likely, mainly before 1am. Cloudy, with a low around 51. Chance of precipitation is 60%.
Sunday
Mostly sunny, with a high near 60.
Sunday Night
Mostly clear, with a low around 36.
Monday
Sunny, with a high near 50.
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 52.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Unionville MD
 39.48°N 77.12°W (Elev. 650 ft)
Last Update:
6:29 am EST Nov 13, 2025
Forecast Valid:
8am 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