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

Pottstown, Pottstown Limerick Airport (KPTW)

Lat: 40.24°NLon: 75.55°WElev: 288ft.

Thunderstorm Light Rain Fog/Mist

64°F

18°C

Humidity 100%
Wind Speed SW 6 mph
Barometer 29.67 in (1004.4 mb)
Dewpoint 64°F (18°C)
Visibility 3.00 mi
Last update 11 Mar 10:54 pm EDT
Extended Forecast for

Collegeville PA

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 42. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 42 °F

    Showers
    Likely

  • Thursday

    Thursday: Rain before 4pm, then a chance of rain and snow between 4pm and 5pm, then a chance of rain after 5pm. Temperature falling to around 40 by 1pm. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 49 °F⇓

    Rain and
    Breezy then
    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Mostly cloudy during the early evening, then gradual clearing, with a low around 28. Northwest wind 5 to 10 mph becoming light west after midnight.

    Low: 28 °F

    Gradual
    Clearing

  • Friday

    Friday: Increasing clouds, with a high near 49. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 49 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 38. West wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 38 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

  • Sunday

    Sunday: Cloudy, with a high near 54.

    High: 54 °F

    Cloudy

  • Sunday Night

    Sunday Night: Rain, mainly after 2am. Low around 46. Chance of precipitation is 90%.

    Low: 46 °F

    Chance Rain
    then Rain

Detailed Forecast

Tonight
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 42. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Rain before 4pm, then a chance of rain and snow between 4pm and 5pm, then a chance of rain after 5pm. Temperature falling to around 40 by 1pm. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Thursday Night
Mostly cloudy during the early evening, then gradual clearing, with a low around 28. Northwest wind 5 to 10 mph becoming light west after midnight.
Friday
Increasing clouds, with a high near 49. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Friday Night
Partly cloudy, with a low around 38. West wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday
Sunny, with a high near 52.
Saturday Night
Mostly cloudy, with a low around 33.
Sunday
Cloudy, with a high near 54.
Sunday Night
Rain, mainly after 2am. Low around 46. Chance of precipitation is 90%.
Monday
Rain. High near 64. Chance of precipitation is 90%.
Monday Night
Rain likely. Mostly cloudy, with a low around 27. Chance of precipitation is 60%.
Tuesday
Mostly sunny, with a high near 38.
Tuesday Night
Mostly clear, with a low around 21.
Wednesday
Mostly sunny, with a high near 39.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Collegeville PA
 40.17°N 75.46°W (Elev. 98 ft)
Last Update:
10:05 pm EDT Mar 11, 2026
Forecast Valid:
11pm EDT Mar 11, 2026-6pm EDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation