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

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

40°F

4°C

Humidity 58%
Wind Speed NW 5 mph
Barometer 30.25 in (1026.3 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 18 Nov 9:56 am EST
Extended Forecast for

Colesville MD

  • Today

    Today: A chance of rain, mainly after 5pm. Mostly cloudy, with a high near 49. Southwest wind 3 to 5 mph. Chance of precipitation is 30%.

    High: 49 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tonight

    Tonight: Rain, mainly before 5am. Patchy fog after 8pm. Low around 39. Southeast wind 3 to 6 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 39 °F

    Rain and
    Patchy Fog

  • Wednesday

    Wednesday: A chance of rain before 7am. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 51. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 51 °F

    Chance Rain
    and 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 53. Calm wind.

    High: 53 °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 61. Chance of precipitation is 30%.

    High: 61 °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

  • Saturday

    Saturday: A chance of rain. Partly sunny, with a high near 53. Chance of precipitation is 40%.

    High: 53 °F

    Chance Rain

Detailed Forecast

Today
A chance of rain, mainly after 5pm. Mostly cloudy, with a high near 49. Southwest wind 3 to 5 mph. Chance of precipitation is 30%.
Tonight
Rain, mainly before 5am. Patchy fog after 8pm. Low around 39. Southeast wind 3 to 6 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday
A chance of rain before 7am. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 51. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 30%.
Wednesday Night
Mostly cloudy, with a low around 41. Calm wind.
Thursday
Cloudy, with a high near 53. 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 before 1pm. Mostly cloudy, with a high near 61. 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 before 1am. 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:
Colesville MD
 39.09°N 77.02°W (Elev. 299 ft)
Last Update:
9:54 am EST Nov 18, 2025
Forecast Valid:
10am 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