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

Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

21°F

-6°C

Humidity 38%
Wind Speed Calm
Barometer 30.47 in (1034.3 mb)
Dewpoint -1°F (-18°C)
Visibility 10.00 mi
Last update 20 Jan 7:56 pm EST
Extended Forecast for

Rockville MD

  • Tonight

    Tonight: Clear, with a low around 14. Northwest wind around 5 mph becoming calm in the evening.

    Low: 14 °F

    Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 39. Light southeast wind becoming south 9 to 14 mph in the morning. Winds could gust as high as 25 mph.

    High: 39 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 31. South wind 8 to 11 mph, with gusts as high as 22 mph.

    Low: 31 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 48. Southwest wind 6 to 10 mph, with gusts as high as 21 mph.

    High: 48 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 26. Northwest wind 3 to 6 mph.

    Low: 26 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of snow before 1pm. Partly sunny, with a high near 36. Chance of precipitation is 20%.

    High: 36 °F

    Slight Chance
    Snow

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 10.

    Low: 10 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of snow after 1pm. Mostly cloudy, with a high near 17. Chance of precipitation is 40%.

    High: 17 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday Night

    Saturday Night: Snow. Low around 13. Chance of precipitation is 80%.

    Low: 13 °F

    Snow

Detailed Forecast

Tonight
Clear, with a low around 14. Northwest wind around 5 mph becoming calm in the evening.
Wednesday
Increasing clouds, with a high near 39. Light southeast wind becoming south 9 to 14 mph in the morning. Winds could gust as high as 25 mph.
Wednesday Night
Mostly cloudy, with a low around 31. South wind 8 to 11 mph, with gusts as high as 22 mph.
Thursday
Mostly sunny, with a high near 48. Southwest wind 6 to 10 mph, with gusts as high as 21 mph.
Thursday Night
Partly cloudy, with a low around 26. Northwest wind 3 to 6 mph.
Friday
A slight chance of snow before 1pm. Partly sunny, with a high near 36. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, with a low around 10.
Saturday
A chance of snow after 1pm. Mostly cloudy, with a high near 17. Chance of precipitation is 40%.
Saturday Night
Snow. Low around 13. Chance of precipitation is 80%.
Sunday
Snow, mainly before 1pm. High near 19. Chance of precipitation is 80%.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 10. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 23.
Monday Night
Partly cloudy, with a low around 8.
Tuesday
Mostly sunny, with a high near 26.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Rockville MD
 39.08°N 77.16°W (Elev. 430 ft)
Last Update:
6:53 pm EST Jan 20, 2026
Forecast Valid:
8pm EST Jan 20, 2026-6pm EST Jan 27, 2026
 
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Additional Resources

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Chance of Precipitation