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

Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Current conditions at

Morristown Airport (KMMU)

Lat: 40.8°NLon: 74.42°WElev: 187ft.

A Few Clouds

10°F

-12°C

Humidity 92%
Wind Speed Calm
Barometer 30.29 in
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Last update 9 Dec 6:45 am EST
Extended Forecast for

Parsippany NJSimilar City Names

  • Today

    Today: Increasing clouds, with a high near 32. Calm wind becoming south around 5 mph in the afternoon.

    High: 32 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, with a low around 25. Southwest wind around 5 mph.

    Low: 25 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Rain and snow likely, possibly mixed with sleet before 1pm, then rain, possibly mixed with snow between 1pm and 4pm, then rain after 4pm. High near 42. South wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New snow and sleet accumulation of less than a half inch possible.

    High: 42 °F

    Wintry Mix
    Likely then
    Wintry Mix

  • Wednesday Night

    Wednesday Night: A slight chance of rain before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around 29. Southwest wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 29 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 37. West wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 37 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 37.

    High: 37 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of snow. Mostly cloudy, with a low around 24. Chance of precipitation is 40%.

    Low: 24 °F

    Chance Snow

  • Saturday

    Saturday: Mostly cloudy, with a high near 37.

    High: 37 °F

    Mostly Cloudy

Detailed Forecast

Today
Increasing clouds, with a high near 32. Calm wind becoming south around 5 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 25. Southwest wind around 5 mph.
Wednesday
Rain and snow likely, possibly mixed with sleet before 1pm, then rain, possibly mixed with snow between 1pm and 4pm, then rain after 4pm. High near 42. South wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New snow and sleet accumulation of less than a half inch possible.
Wednesday Night
A slight chance of rain before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around 29. Southwest wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 37. West wind 10 to 15 mph, with gusts as high as 30 mph.
Thursday Night
Partly cloudy, with a low around 24.
Friday
Mostly sunny, with a high near 37.
Friday Night
A chance of snow. Mostly cloudy, with a low around 24. Chance of precipitation is 40%.
Saturday
Mostly cloudy, with a high near 37.
Saturday Night
A chance of snow after 1am. Mostly cloudy, with a low around 24. Chance of precipitation is 30%.
Sunday
Partly sunny, with a high near 33.
Sunday Night
Mostly clear, with a low around 15.
Monday
Mostly sunny, with a high near 28.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Parsippany NJSimilar City Names
 40.85°N 74.4°W (Elev. 200 ft)
Last Update:
5:46 am EST Dec 9, 2025
Forecast Valid:
6am EST Dec 9, 2025-6pm EST Dec 15, 2025
 
Forecast Discussion
 
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Additional Resources

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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