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

Areas of Severe Thunderstorms and Heavy Rain Possible through the Weekend

There will be daily chances for scattered thunderstorms across portions of the Central and Eastern U.S. through the weekend, with severe thunderstorms possible in the northern Plains and Upper Midwest. Potential severe storm hazards may include large hail, damaging winds, and a few tornadoes. Storms could also produce heavy rain that may lead to isolated instances of flash flooding. Read More >

Current conditions at

Pottstown, Pottstown Limerick Airport (KPTW)

Lat: 40.24°NLon: 75.55°WElev: 288ft.

Partly Cloudy

83°F

28°C

Humidity 70%
Wind Speed SW 5 mph
Barometer 30.02 in (1016.0 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 28 Jun 4:54 pm EDT
Extended Forecast for

Collegeville PA

  • This Afternoon

    This Afternoon: Isolated showers and thunderstorms. Some of the storms could be severe. Mostly sunny, with a high near 88. Southwest wind around 10 mph. Chance of precipitation is 20%.

    High: 88 °F

    Severe
    Thunderstorms

  • Tonight

    Tonight: Scattered showers and thunderstorms before 1am, then isolated showers between 1am and 3am. Some of the storms could be severe. Mostly cloudy, with a low around 69. Southwest wind around 5 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    Severe
    Thunderstorms
    then
    Scattered
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 88. Northwest wind 5 to 10 mph.

    High: 88 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Partly Cloudy

  • Monday

    Monday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 90. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 73. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 73 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 70%.

    High: 88 °F

    Chance
    T-storms then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely before 8pm. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.

    Low: 68 °F

    Showers
    Likely then
    Mostly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

This Afternoon
Isolated showers and thunderstorms. Some of the storms could be severe. Mostly sunny, with a high near 88. Southwest wind around 10 mph. Chance of precipitation is 20%.
Tonight
Scattered showers and thunderstorms before 1am, then isolated showers between 1am and 3am. Some of the storms could be severe. Mostly cloudy, with a low around 69. Southwest wind around 5 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Partly sunny, with a high near 88. Northwest wind 5 to 10 mph.
Sunday Night
Partly cloudy, with a low around 67. Calm wind.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 90. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
A chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 73. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
A chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 70%.
Tuesday Night
Showers likely before 8pm. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Wednesday
Sunny, with a high near 86.
Wednesday Night
Mostly clear, with a low around 67.
Thursday
Mostly sunny, with a high near 88.
Thursday Night
Partly cloudy, with a low around 64.
Independence Day
Sunny, with a high near 84.
Friday Night
Partly cloudy, with a low around 63.
Saturday
Mostly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Collegeville PA
 40.19°N 75.46°W (Elev. 200 ft)
Last Update:
4:13 pm EDT Jun 28, 2025
Forecast Valid:
5pm EDT Jun 28, 2025-6pm EDT Jul 5, 2025
 
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