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

Heavy to Excessive Rainfall This Week from the Southwest into Central U.S.

Pacific tropical moisture wrapping into a storm over the southwest U.S. will continue a multi-day heavy rainfall event this week that will extend into the Midwest and southern Plains. Considerable flash flooding is possible across portions of New Mexico and west Texas today through Wednesday. Read More >

Current conditions at

Pottstown, Pottstown Limerick Airport (KPTW)

Lat: 40.24°NLon: 75.55°WElev: 288ft.

Overcast

67°F

19°C

Humidity 76%
Wind Speed NW 7 mph
Barometer 30.07 in (1017.7 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 29 Sep 10:54 am EDT
Extended Forecast for

Collegeville PA

  • Today

    Today: Partly sunny, with a high near 74. Northwest wind around 5 mph.

    High: 74 °F

    Partly Sunny

  • Tonight

    Tonight: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 55. Calm wind.

    Low: 55 °F

    Partly Cloudy
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 78. Calm wind becoming west around 5 mph.

    High: 78 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 60. Calm wind.

    Low: 60 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 81. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 81 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 60.

    Low: 60 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers after 2pm. Mostly cloudy, with a high near 73. Chance of precipitation is 30%.

    High: 73 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

Today
Partly sunny, with a high near 74. Northwest wind around 5 mph.
Tonight
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 55. Calm wind.
Wednesday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 78. Calm wind becoming west around 5 mph.
Wednesday Night
Mostly cloudy, with a low around 60. Calm wind.
Thursday
Mostly sunny, with a high near 81. Calm wind becoming southwest around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 63.
Friday
Mostly sunny, with a high near 84.
Friday Night
Mostly cloudy, with a low around 60.
Saturday
A chance of showers after 2pm. Mostly cloudy, with a high near 73. Chance of precipitation is 30%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 55. Chance of precipitation is 50%.
Sunday
Showers likely. Cloudy, with a high near 68. Chance of precipitation is 60%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 52. Chance of precipitation is 40%.
Monday
Partly sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Collegeville PA
 40.19°N 75.46°W (Elev. 200 ft)
Last Update:
4:09 am EDT Sep 29, 2026
Forecast Valid:
11am EDT Sep 29, 2026-6pm EDT Oct 5, 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