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

Pottstown, Pottstown Limerick Airport (KPTW)

Lat: 40.24°NLon: 75.55°WElev: 288ft.

Mostly Cloudy

29°F

-2°C

Humidity 75%
Wind Speed Calm
Barometer 29.88 in (1011.8 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Last update 10 Dec 2:54 am EST
Extended Forecast for

Sassamansville PA

  • Overnight

    Overnight: Mostly cloudy, with a low around 23. South wind around 10 mph.

    Low: 23 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Rain, mainly after 11am.  High near 41. South wind 10 to 15 mph.  Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 41 °F

    Chance Rain
    then Rain

  • Wednesday Night

    Wednesday Night: A chance of rain before 8pm.  Cloudy during the early evening, then gradual clearing, with a low around 26. Southwest wind 10 to 15 mph becoming west 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: 26 °F

    Chance Rain
    then Partly
    Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 34. Breezy, with a west wind 15 to 20 mph, with gusts as high as 35 mph.

    High: 34 °F

    Partly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 22. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 22 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Friday

    Friday: Partly sunny, with a high near 35.

    High: 35 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of snow.  Mostly cloudy, with a low around 21. Chance of precipitation is 40%.

    Low: 21 °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 22. Chance of precipitation is 40%.

    Low: 22 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Overnight
Mostly cloudy, with a low around 23. South wind around 10 mph.
Wednesday
Rain, mainly after 11am. High near 41. South wind 10 to 15 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A chance of rain before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 26. Southwest wind 10 to 15 mph becoming west 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 34. Breezy, with a west wind 15 to 20 mph, with gusts as high as 35 mph.
Thursday Night
Partly cloudy, with a low around 22. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Friday
Partly sunny, with a high near 35.
Friday Night
A chance of snow. Mostly cloudy, with a low around 21. 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 22. Chance of precipitation is 40%.
Sunday
Partly sunny, with a high near 31.
Sunday Night
Partly cloudy, with a low around 14.
Monday
Mostly sunny, with a high near 29.
Monday Night
Mostly cloudy, with a low around 16.
Tuesday
Partly sunny, with a high near 32.
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ABOUT THIS FORECAST

 
Point Forecast:
Sassamansville PA
 40.32°N 75.58°W (Elev. 299 ft)
1:47 am EST Dec 10, 2025
3am EST Dec 10, 2025-6pm EST Dec 16, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database