National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Current conditions at

Pottstown, Pottstown Limerick Airport (KPTW)

Lat: 40.24°NLon: 75.55°WElev: 288ft.

Fair

58°F

14°C

Humidity 78%
Wind Speed NW 7 mph
Barometer 30.16 in (1020.9 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 3 Oct 4:54 am EDT
Extended Forecast for

Harleysville PA

  • Today

    Today: Mostly sunny, with a high near 72. North wind around 5 mph becoming east in the afternoon.

    High: 72 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 54. East wind around 5 mph becoming calm.

    Low: 54 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 65. East wind around 5 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 65 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers, mainly before 8pm. Cloudy, with a low around 55. Northeast wind around 5 mph becoming calm. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 55 °F

    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 70. Northwest wind 5 to 15 mph.

    High: 70 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Clear, with a low around 44.

    Low: 44 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 42.

    Low: 42 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 72. North wind around 5 mph becoming east in the afternoon.
Tonight
Partly cloudy, with a low around 54. East wind around 5 mph becoming calm.
Sunday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 65. East wind around 5 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
A chance of showers, mainly before 8pm. Cloudy, with a low around 55. Northeast wind around 5 mph becoming calm. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly sunny, with a high near 70. Northwest wind 5 to 15 mph.
Monday Night
Clear, with a low around 44.
Tuesday
Sunny, with a high near 63.
Tuesday Night
Clear, with a low around 42.
Wednesday
Sunny, with a high near 66.
Wednesday Night
Mostly clear, with a low around 46.
Thursday
Sunny, with a high near 70.
Thursday Night
Mostly clear, with a low around 50.
Friday
Sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Harleysville PA
 40.3°N 75.41°W (Elev. 207 ft)
Last Update:
4:09 am EDT Oct 3, 2026
Forecast Valid:
5am EDT Oct 3, 2026-6pm EDT Oct 9, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation