Heavy Snow In Upper Midwest; Locally Heavy Rain with Mountain Snow Out West

A quick-moving clipper system is expected to produce a streak of heavy snow from the Dakotas through the Upper Mississippi Valley and Great Lakes. Meanwhile, a series of storm systems will keep the West wet and unsettled through this weekend, bringing rounds of locally heavy rainfall and widespread heavy snowfall across the terrain from the Casacdes and Sierra to the northern and central Rockies. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

28°F

-2°C

Humidity 63%
Wind Speed Calm
Barometer 30.61 in (1038.8 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Last update 12 Dec 1:56 am EST
Extended Forecast for

Rockville MD

  • Overnight

    Overnight: Clear, with a low around 26. Northwest wind around 7 mph.

    Clear

    Low: 26 °F

  • Thursday

    Thursday: Sunny, with a high near 38. North wind around 5 mph becoming light and variable.

    Sunny

    High: 38 °F

  • Thursday
    Night

    Thursday Night: Increasing clouds, with a low around 29. Southeast wind around 5 mph becoming calm  after midnight.

    Increasing
    Clouds

    Low: 29 °F

  • Friday

    Friday: A slight chance of showers between 8am and 11am, then rain likely after 11am.  Mostly cloudy, with a high near 42. Light northeast wind.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Chance Rain
    then Rain
    Likely

    High: 42 °F

  • Friday
    Night

    Friday Night: Rain.  Low around 40. Northeast wind around 5 mph.  Chance of precipitation is 90%.

    Rain

    Low: 40 °F

  • Saturday

    Saturday: Rain.  High near 50. Chance of precipitation is 90%.

    Rain

    High: 50 °F

  • Saturday
    Night

    Saturday Night: Rain likely before 8pm, then a chance of showers between 8pm and 2am.  Mostly cloudy, with a low around 39. Chance of precipitation is 70%.

    Rain Likely
    then Chance
    Showers

    Low: 39 °F

  • Sunday

    Sunday: Mostly sunny, with a high near 48.

    Mostly Sunny

    High: 48 °F

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 33.

    Partly Cloudy

    Low: 33 °F

Detailed Forecast

Overnight
Clear, with a low around 26. Northwest wind around 7 mph.
Thursday
Sunny, with a high near 38. North wind around 5 mph becoming light and variable.
Thursday Night
Increasing clouds, with a low around 29. Southeast wind around 5 mph becoming calm after midnight.
Friday
A slight chance of showers between 8am and 11am, then rain likely after 11am. Mostly cloudy, with a high near 42. Light northeast wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Rain. Low around 40. Northeast wind around 5 mph. Chance of precipitation is 90%.
Saturday
Rain. High near 50. Chance of precipitation is 90%.
Saturday Night
Rain likely before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 39. Chance of precipitation is 70%.
Sunday
Mostly sunny, with a high near 48.
Sunday Night
Partly cloudy, with a low around 33.
Monday
A chance of rain and snow between 8am and 2pm, then a chance of rain after 2pm. Mostly cloudy, with a high near 40. Chance of precipitation is 50%.
Monday Night
Rain and snow likely. Mostly cloudy, with a low around 34. Chance of precipitation is 60%.
Tuesday
Rain and snow likely. Mostly cloudy, with a high near 46. Chance of precipitation is 60%.
Tuesday Night
Showers likely. Partly cloudy, with a low around 30. Chance of precipitation is 60%.
Wednesday
Mostly sunny, with a high near 40.
Click Map For Forecast
Point Forecast:
Rockville MD
 39.08°N 77.16°W (Elev. 430 ft)
12:32 am EST Dec 12, 2019
2am EST Dec 12, 2019-6pm EST Dec 18, 2019
 
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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