Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

Current conditions at

Pottstown, Pottstown Limerick Airport (KPTW)

Lat: 40.24°NLon: 75.55°WElev: 288ft.

Overcast

70°F

21°C

Humidity 82%
Wind Speed Calm
Barometer 29.87 in (1011.1 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 5 Sep 5:54 am EDT
Extended Forecast for

Collegeville PA

  • Today

    Today: Partly sunny, with a high near 82. Calm wind becoming north around 5 mph in the morning.

    High: 82 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 59. North wind around 5 mph becoming calm.

    Low: 59 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 79. Northeast wind around 5 mph.

    High: 79 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56. Calm wind.

    Low: 56 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Sunny, with a high near 80. Calm wind becoming north around 5 mph.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 82. Calm wind becoming north around 5 mph in the morning.
Tonight
Mostly clear, with a low around 59. North wind around 5 mph becoming calm.
Sunday
Mostly sunny, with a high near 79. Northeast wind around 5 mph.
Sunday Night
Partly cloudy, with a low around 56. Calm wind.
Labor Day
Sunny, with a high near 80. Calm wind becoming north around 5 mph.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Mostly sunny, with a high near 83.
Tuesday Night
Partly cloudy, with a low around 60.
Wednesday
Mostly sunny, with a high near 86.
Wednesday Night
Partly cloudy, with a low around 70.
Thursday
Mostly sunny, with a high near 83.
Thursday Night
Partly cloudy, with a low around 60.
Friday
Mostly sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
Collegeville PA
 40.19°N 75.46°W (Elev. 200 ft)
4:09 am EDT Sep 5, 2026
6am EDT Sep 5, 2026-6pm EDT Sep 11, 2026
 
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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