Storm Impacting the Southwest U.S.; Above Normal Temperatures Further East

A storm system will shift across the southwest U.S. through Thursday with widespread showers and isolated thunderstorms. Isolated flooding is possible. High-elevation snow is also expected in parts of Nevada and the southern Sierra Nevada range. East of this storm, above average temperatures will challenge or break daily record high temperatures this week in the southern Plains and southeast U.S. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

45°F

7°C

Humidity 44%
Wind Speed W 7 mph
Barometer 30.24 in (1025.8 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 18 Nov 10:56 am EST
Extended Forecast for

Green Valley MD

  • Today

    Today: A chance of rain, mainly after 5pm.  Cloudy, with a high near 46. Southwest wind 3 to 5 mph.  Chance of precipitation is 30%.

    High: 46 °F

    Chance Rain

  • Tonight

    Tonight: Rain, mainly before 5am.  Patchy fog after 8pm. Low around 38. South wind around 5 mph becoming calm  after midnight.  Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 38 °F

    Rain and
    Patchy Fog

  • Wednesday

    Wednesday: A chance of rain before 7am.  Patchy fog before 11am.  Otherwise, cloudy, with a high near 50. Light north wind.  Chance of precipitation is 30%.

    High: 50 °F

    Chance Rain
    and Patchy
    Fog then
    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A slight chance of rain after 1am.  Cloudy, with a low around 39. Calm wind.  Chance of precipitation is 20%.

    Low: 39 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday

    Thursday: Cloudy, with a high near 51. Calm wind.

    High: 51 °F

    Cloudy

  • Thursday Night

    Thursday Night: A chance of rain after 1am.  Cloudy, with a low around 45. Chance of precipitation is 30%.

    Low: 45 °F

    Cloudy then
    Chance Rain

  • Friday

    Friday: A chance of rain.  Mostly cloudy, with a high near 60. Chance of precipitation is 40%.

    High: 60 °F

    Chance Rain

  • Friday Night

    Friday Night: Rain likely, mainly before 1am.  Mostly cloudy, with a low around 42. Chance of precipitation is 60%.

    Low: 42 °F

    Rain Likely

  • Saturday

    Saturday: A chance of rain.  Partly sunny, with a high near 52. Chance of precipitation is 40%.

    High: 52 °F

    Chance Rain

Detailed Forecast

Today
A chance of rain, mainly after 5pm. Cloudy, with a high near 46. Southwest wind 3 to 5 mph. Chance of precipitation is 30%.
Tonight
Rain, mainly before 5am. Patchy fog after 8pm. Low around 38. South wind around 5 mph becoming calm after midnight. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
A chance of rain before 7am. Patchy fog before 11am. Otherwise, cloudy, with a high near 50. Light north wind. Chance of precipitation is 30%.
Wednesday Night
A slight chance of rain after 1am. Cloudy, with a low around 39. Calm wind. Chance of precipitation is 20%.
Thursday
Cloudy, with a high near 51. Calm wind.
Thursday Night
A chance of rain after 1am. Cloudy, with a low around 45. Chance of precipitation is 30%.
Friday
A chance of rain. Mostly cloudy, with a high near 60. Chance of precipitation is 40%.
Friday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 42. Chance of precipitation is 60%.
Saturday
A chance of rain. Partly sunny, with a high near 52. Chance of precipitation is 40%.
Saturday Night
A chance of rain before 1am. Partly cloudy, with a low around 33. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 53.
Sunday Night
Partly cloudy, with a low around 36.
Monday
Mostly sunny, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
Green Valley MD
 39.34°N 77.26°W (Elev. 548 ft)
9:54 am EST Nov 18, 2025
11am EST Nov 18, 2025-6pm EST Nov 24, 2025
 
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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