Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

Philadelphia, Philadelphia International Airport (KPHL)

Lat: 39.87°NLon: 75.23°WElev: 7ft.

Overcast

33°F

1°C

Humidity 61%
Wind Speed S 10 mph
Barometer 30.03 in (1016.8 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 9 Dec 7:54 pm EST
Extended Forecast for

2 Miles NW Williamstown NJ

  • Tonight

    Tonight: Mostly cloudy, with a low around 26. Southwest wind 5 to 10 mph.

    Low: 26 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Rain likely, mainly after 2pm.  Increasing clouds, with a high near 45. South wind 10 to 15 mph, with gusts as high as 30 mph.  Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 45 °F

    Mostly Cloudy
    then Rain
    Likely

  • 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 24. West wind 10 to 15 mph.

    Low: 24 °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 30%.

    Low: 25 °F

    Chance Snow

  • Saturday

    Saturday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of snow after 1am.  Mostly cloudy, with a low around 28. Chance of precipitation is 40%.

    Low: 28 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Tonight
Mostly cloudy, with a low around 26. Southwest wind 5 to 10 mph.
Wednesday
Rain likely, mainly after 2pm. Increasing clouds, with a high near 45. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. 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 24. West wind 10 to 15 mph.
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 30%.
Saturday
Partly sunny, with a high near 42.
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 before 1pm. Partly sunny, with a high near 37. Chance of precipitation is 40%.
Sunday Night
Mostly clear, with a low around 17.
Monday
Sunny, with a high near 31.
Monday Night
Mostly cloudy, with a low around 20.
Tuesday
Mostly sunny, with a high near 35.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW Williamstown NJ
 39.7°N 75.03°W (Elev. 112 ft)
4:09 pm EST Dec 9, 2025
8pm EST Dec 9, 2025-6pm EST Dec 16, 2025
 
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Additional Resources

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Hourly Weather Forecast

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