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.

Overcast

48°F

9°C

Humidity 39%
Wind Speed Vrbl 6 mph
Barometer 30.16 in (1023.1 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 18 Nov 2:56 pm EST
Extended Forecast for

Rockville MD

  • This Afternoon

    This Afternoon: A chance of rain, mainly after 4pm. Cloudy, with a high near 48. Southwest wind around 5 mph. Chance of precipitation is 30%.

    High: 48 °F

    Chance Rain

  • Tonight

    Tonight: Rain, mainly before 5am. Patchy fog after 9pm. Low around 40. Southeast wind 3 to 6 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 40 °F

    Rain and
    Patchy Fog

  • Wednesday

    Wednesday: A chance of rain before 7am. Patchy fog before 10am. Otherwise, cloudy, with a high near 50. Calm wind becoming north 5 to 7 mph in the morning. Chance of precipitation is 30%.

    High: 50 °F

    Chance Rain
    and Patchy
    Fog then
    Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 39. Light north wind.

    Low: 39 °F

    Mostly Cloudy

  • Thursday

    Thursday: Cloudy, with a high near 51. Calm wind becoming southeast around 5 mph.

    High: 51 °F

    Cloudy

  • Thursday Night

    Thursday Night: Cloudy, with a low around 44.

    Low: 44 °F

    Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 59.

    High: 59 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Rain likely, mainly after 1am. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.

    Low: 46 °F

    Rain Likely

  • Saturday

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

    High: 53 °F

    Chance Rain

Detailed Forecast

This Afternoon
A chance of rain, mainly after 4pm. Cloudy, with a high near 48. Southwest wind around 5 mph. Chance of precipitation is 30%.
Tonight
Rain, mainly before 5am. Patchy fog after 9pm. Low around 40. Southeast wind 3 to 6 mph. Chance of precipitation is 100%. 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, cloudy, with a high near 50. Calm wind becoming north 5 to 7 mph in the morning. Chance of precipitation is 30%.
Wednesday Night
Mostly cloudy, with a low around 39. Light north wind.
Thursday
Cloudy, with a high near 51. Calm wind becoming southeast around 5 mph.
Thursday Night
Cloudy, with a low around 44.
Friday
Mostly cloudy, with a high near 59.
Friday Night
Rain likely, mainly after 1am. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.
Saturday
A chance of rain. Mostly cloudy, with a high near 53. Chance of precipitation is 40%.
Saturday Night
Mostly cloudy, with a low around 39.
Sunday
Mostly sunny, with a high near 56.
Sunday Night
Mostly clear, with a low around 39.
Monday
Sunny, with a high near 57.
Monday Night
Partly cloudy, with a low around 41.
Tuesday
Partly sunny, with a high near 57.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Rockville MD
 39.08°N 77.16°W (Elev. 430 ft)
Last Update:
12:54 pm EST Nov 18, 2025
Forecast Valid:
3pm EST Nov 18, 2025-6pm EST Nov 25, 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