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

Philadelphia, Philadelphia International Airport (KPHL)

Lat: 39.87°NLon: 75.23°WElev: 7ft.

Overcast

27°F

-3°C

Humidity 28%
Wind Speed N 13 mph
Barometer 30.31 in (1026.4 mb)
Dewpoint -2°F (-19°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 8 Dec 9:54 pm EST
Extended Forecast for

2 Miles NW Williamstown NJ

  • Tonight

    Tonight: Cloudy early, then gradual clearing, with a low around 15. North wind around 5 mph.

    Low: 15 °F

    Gradual
    Clearing

  • Tuesday

    Tuesday: Increasing clouds, with a high near 35. Calm wind becoming south around 5 mph in the afternoon.

    High: 35 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 27. Southwest wind around 5 mph.

    Low: 27 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain.  Mostly cloudy, with a high near 46. South wind 5 to 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 46 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A slight chance of rain before 1am.  Mostly cloudy, with a low around 33. Southwest wind around 10 mph.  Chance of precipitation is 20%.

    Low: 33 °F

    Slight Chance
    Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 38.

    High: 38 °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

Detailed Forecast

Tonight
Cloudy early, then gradual clearing, with a low around 15. North wind around 5 mph.
Tuesday
Increasing clouds, with a high near 35. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 27. Southwest wind around 5 mph.
Wednesday
A chance of rain. Mostly cloudy, with a high near 46. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A slight chance of rain before 1am. Mostly cloudy, with a low around 33. Southwest wind around 10 mph. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 41.
Thursday Night
Partly cloudy, with a low around 25.
Friday
Mostly sunny, with a high near 38.
Friday Night
A chance of snow. Mostly cloudy, with a low around 25. Chance of precipitation is 40%.
Saturday
Mostly sunny, with a high near 37.
Saturday Night
Mostly cloudy, with a low around 21.
Sunday
Mostly sunny, with a high near 33.
Sunday Night
Mostly clear, with a low around 17.
Monday
Mostly sunny, with a high near 33.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW Williamstown NJ
 39.7°N 75.03°W (Elev. 112 ft)
4:10 pm EST Dec 8, 2025
10pm EST Dec 8, 2025-6pm EST Dec 15, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database