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

Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds in the North-Central U.S.

A prolonged atmospheric river will continue impacting the Pacific Northwest with heavy rainfall which has lead to areas of urban and river flooding along with gusty winds into Thursday. A clipper will bring heavy snow, some mixed wintry precipitation, and gusty to high winds across the northern Plains, Upper Midwest, and the Great Lakes into Thursday morning. Read More >

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Fair

31°F

-1°C

Humidity 29%
Wind Speed S 10 mph
Barometer 30.15 in (1020.7 mb)
Dewpoint 2°F (-17°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 9 Dec 12:53 pm EST
Extended Forecast for

Morrisville PA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 35. Southwest wind around 5 mph.

    High: 35 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 26. Southwest wind 5 to 10 mph.

    Low: 26 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Rain, mainly after 1pm. High near 45. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 45 °F

    Slight Chance
    Rain then
    Rain

  • Wednesday Night

    Wednesday Night: A chance of rain, mainly before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around 30. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 30 °F

    Chance Rain

  • Thursday

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

    High: 37 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

  • 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 25. Chance of precipitation is 40%.

    Low: 25 °F

    Chance Snow

  • Saturday

    Saturday: Mostly cloudy, with a high near 41.

    High: 41 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 35. Southwest wind around 5 mph.
Tonight
Increasing clouds, with a low around 26. Southwest wind 5 to 10 mph.
Wednesday
Rain, mainly after 1pm. High near 45. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A chance of rain, mainly before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around 30. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Mostly sunny, with a high near 37. West wind around 15 mph, with gusts as high as 30 mph.
Thursday Night
Mostly clear, with a low around 25.
Friday
Mostly sunny, with a high near 37.
Friday Night
A chance of snow. Mostly cloudy, with a low around 25. Chance of precipitation is 40%.
Saturday
Mostly cloudy, with a high near 41.
Saturday Night
A chance of snow after 1am. Mostly cloudy, with a low around 28. Chance of precipitation is 40%.
Sunday
A chance of snow. Partly sunny, with a high near 36. Chance of precipitation is 40%.
Sunday Night
Partly cloudy, with a low around 17.
Monday
Mostly sunny, with a high near 31.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Morrisville PA
 40.2°N 74.79°W (Elev. 98 ft)
Last Update:
1:21 pm EST Dec 9, 2025
Forecast Valid:
1pm EST Dec 9, 2025-6pm EST Dec 15, 2025
 
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Additional Resources

Radar & Satellite Image

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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