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

Showers and Thunderstorms in the Southwest and Ohio Valley; Mountain Snow in the Northeast

Showers and thunderstorms, along with high-elevation snow, will begin to develop over parts of the Southwest late tonight and is expected to continue through Wednesday morning. Mountain snow over parts the Northeast will continue through Tuesday. A few strong to severe storms and heavy rainfall are possible across portions of the Lower Ohio Valley Tuesday. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

27°F

-3°C

Humidity 89%
Wind Speed NW 3 mph
Barometer 30.14 in (1022.3 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Last update 18 Nov 12:56 am EST
Extended Forecast for

Wheaton-Glenmont MD

  • Overnight

    Overnight: Mostly clear, with a low around 28. Light west wind.

    Low: 28 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of rain, mainly after 5pm. Increasing clouds, with a high near 48. Calm wind becoming southwest around 5 mph. Chance of precipitation is 30%.

    High: 48 °F

    Mostly Sunny
    then Chance
    Rain

  • Tuesday Night

    Tuesday Night: Rain, mainly before 5am. Patchy fog after 8pm. Low around 40. Light southeast wind. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 40 °F

    Rain and
    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 51. Calm wind becoming north around 6 mph in the afternoon.

    High: 51 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 41. Calm wind.

    Low: 41 °F

    Mostly Cloudy

  • Thursday

    Thursday: Cloudy, with a high near 52.

    High: 52 °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 before 1pm. Mostly cloudy, with a high near 60. Chance of precipitation is 30%.

    High: 60 °F

    Chance Rain

  • Friday Night

    Friday Night: Rain likely, mainly after 1am. Mostly cloudy, with a low around 44. Chance of precipitation is 60%.

    Low: 44 °F

    Rain Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 28. Light west wind.
Tuesday
A chance of rain, mainly after 5pm. Increasing clouds, with a high near 48. Calm wind becoming southwest around 5 mph. Chance of precipitation is 30%.
Tuesday Night
Rain, mainly before 5am. Patchy fog after 8pm. Low around 40. Light southeast wind. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 51. Calm wind becoming north around 6 mph in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 41. Calm wind.
Thursday
Cloudy, with a high near 52.
Thursday Night
A chance of rain after 1am. Cloudy, with a low around 45. Chance of precipitation is 30%.
Friday
A chance of rain before 1pm. Mostly cloudy, with a high near 60. Chance of precipitation is 30%.
Friday Night
Rain likely, mainly after 1am. Mostly cloudy, with a low around 44. Chance of precipitation is 60%.
Saturday
A chance of rain. Partly sunny, with a high near 53. Chance of precipitation is 40%.
Saturday Night
A chance of rain. Partly cloudy, with a low around 35. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 54.
Sunday Night
Partly cloudy, with a low around 38.
Monday
Mostly sunny, with a high near 57.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Wheaton-Glenmont MD
 39.05°N 77.05°W (Elev. 427 ft)
Last Update:
12:53 am EST Nov 18, 2025
Forecast Valid:
1am EST Nov 18, 2025-6pm EST Nov 24, 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