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

Flash Flooding Continuing Along the Gulf Coast; Dry Thunderstorms in the West

Excessive rainfall continues to produce life-threatening, locally catastrophic flash flooding along the central Gulf Coast. Isolated to scattered dry thunderstorms may cause lightning-ignited fires and erratic behavior due to gusty winds across parts Oregon, California, and the Great Basin into the weekend. Read More >

Current conditions at

Pottstown, Pottstown Limerick Airport (KPTW)

Lat: 40.24°NLon: 75.55°WElev: 288ft.

Partly Cloudy

79°F

26°C

Humidity 39%
Wind Speed W 9 G 24 mph
Barometer 29.73 in (1006.4 mb)
Dewpoint 52°F (11°C)
Visibility NA
Heat Index79°F (26°C)
Last update 19 Jun 2:54 pm EDT
Extended Forecast for

Harleysville PA

  • Tonight

    Tonight: Clear, with a low around 59. West wind 5 to 15 mph.

    Low: 59 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 81. West wind 10 to 15 mph.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 58. West wind around 5 mph becoming calm in the evening.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 83. Light west wind increasing to 5 to 10 mph in the morning.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 61. Calm wind. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Partly Cloudy
    then Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 79. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Showers

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before 8pm, then showers likely between 8pm and 2am. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.

    Low: 61 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 59. West wind 5 to 15 mph.
Saturday
Sunny, with a high near 81. West wind 10 to 15 mph.
Saturday Night
Mostly clear, with a low around 58. West wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 83. Light west wind increasing to 5 to 10 mph in the morning.
Sunday Night
A chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 61. Calm wind. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 79. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers likely and possibly a thunderstorm before 8pm, then showers likely between 8pm and 2am. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
Mostly clear, with a low around 59.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Partly cloudy, with a low around 61.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Chance of precipitation is 40%.
Friday
A chance of showers. Mostly sunny, with a high near 82. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Harleysville PA
 40.27°N 75.39°W (Elev. 299 ft)
Last Update:
11:32 am EDT Jun 19, 2026
Forecast Valid:
3pm EDT Jun 19, 2026-6pm EDT Jun 26, 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