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

Pennridge Airport (KCKZ)

Lat: 40.39°NLon: 75.29°WElev: 568ft.

Fair

12°F

-11°C

Humidity 52%
Wind Speed N 5 mph
Barometer 30.25 in
Dewpoint -2°F (-19°C)
Visibility 10.00 mi
Wind Chill4°F (-16°C)
Last update 9 Dec 5:35 am EST
Extended Forecast for

Harleysville PA

  • Today

    Today: Increasing clouds, with a high near 32. Calm wind becoming south around 5 mph in the afternoon.

    High: 32 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, with a low around 24. South wind around 5 mph.

    Low: 24 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Rain and snow likely before 10am, then rain.  High near 42. South wind 10 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 42 °F

    Rain/Snow
    Likely then
    Rain

  • Wednesday Night

    Wednesday Night: A slight chance of rain before 10pm.  Cloudy, then gradually becoming partly cloudy, with a low around 28. Southwest wind 10 to 15 mph becoming west after midnight.  Chance of precipitation is 20%.

    Low: 28 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • 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: Partly cloudy, with a low around 22.

    Low: 22 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly 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: Mostly cloudy, with a high near 37.

    High: 37 °F

    Mostly Cloudy

Detailed Forecast

Today
Increasing clouds, with a high near 32. Calm wind becoming south around 5 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 24. South wind around 5 mph.
Wednesday
Rain and snow likely before 10am, then rain. High near 42. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Wednesday Night
A slight chance of rain before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around 28. Southwest wind 10 to 15 mph becoming west after midnight. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 37. West wind around 15 mph, with gusts as high as 30 mph.
Thursday Night
Partly cloudy, with a low around 22.
Friday
Mostly sunny, with a high near 36.
Friday Night
A chance of snow. Mostly cloudy, with a low around 23. Chance of precipitation is 40%.
Saturday
Mostly cloudy, with a high near 37.
Saturday Night
A chance of snow after 1am. Mostly cloudy, with a low around 23. Chance of precipitation is 40%.
Sunday
Partly sunny, with a high near 31.
Sunday Night
Mostly clear, with a low around 12.
Monday
Mostly sunny, with a high near 27.
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ABOUT THIS FORECAST

 
Point Forecast:
Harleysville PA
 40.27°N 75.39°W (Elev. 299 ft)
5:46 am EST Dec 9, 2025
5am EST Dec 9, 2025-6pm EST Dec 15, 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