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 - Wings Field Airport (KLOM)

Lat: 40.14°NLon: 75.27°WElev: 282ft.

Mostly Cloudy

31°F

-1°C

Humidity 81%
Wind Speed S 3 mph
Barometer 29.85 in
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 10 Dec 3:55 am EST
Extended Forecast for

Gwynedd PA

  • Today

    Today: Rain, mainly after 2pm.  High near 42. South wind 10 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 42 °F

    Mostly Cloudy
    then Rain

  • Tonight

    Tonight: A chance of rain before 8pm.  Cloudy during the early evening, then gradual clearing, with a low around 28. Southwest wind 10 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 28 °F

    Chance Rain
    then Partly
    Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 35. Breezy, with a west wind 15 to 20 mph, with gusts as high as 35 mph.

    High: 35 °F

    Partly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 24. West wind around 15 mph, with gusts as high as 30 mph.

    Low: 24 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 36. West wind 5 to 10 mph, with gusts as high as 25 mph.

    High: 36 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of snow.  Mostly cloudy, with a low around 23. Chance of precipitation is 40%.

    Low: 23 °F

    Chance Snow

  • Saturday

    Saturday: Partly sunny, with a high near 38.

    High: 38 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of snow after 1am.  Mostly cloudy, with a low around 24. Chance of precipitation is 40%.

    Low: 24 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday

    Sunday: Partly sunny, with a high near 32.

    High: 32 °F

    Partly Sunny

Detailed Forecast

Today
Rain, mainly after 2pm. High near 42. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A chance of rain before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 28. Southwest wind 10 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Partly sunny, with a high near 35. Breezy, with a west wind 15 to 20 mph, with gusts as high as 35 mph.
Thursday Night
Partly cloudy, with a low around 24. West wind around 15 mph, with gusts as high as 30 mph.
Friday
Partly sunny, with a high near 36. West wind 5 to 10 mph, with gusts as high as 25 mph.
Friday Night
A chance of snow. Mostly cloudy, with a low around 23. Chance of precipitation is 40%.
Saturday
Partly sunny, with a high near 38.
Saturday Night
A chance of snow after 1am. Mostly cloudy, with a low around 24. Chance of precipitation is 40%.
Sunday
Partly sunny, with a high near 32.
Sunday Night
Mostly clear, with a low around 15.
Monday
Mostly sunny, with a high near 29.
Monday Night
Partly cloudy, with a low around 17.
Tuesday
Partly sunny, with a high near 33.
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ABOUT THIS FORECAST

 
Point Forecast:
Gwynedd PA
 40.19°N 75.26°W (Elev. 295 ft)
4:09 am EST Dec 10, 2025
4am EST Dec 10, 2025-6pm EST Dec 16, 2025
 
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