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.

Fog/Mist

42°F

6°C

Humidity 100%
Wind Speed E 7 mph
Barometer 30.41 in (1029.7 mb)
Dewpoint 42°F (6°C)
Visibility 2.00 mi
Wind Chill38°F (3°C)
Last update 2 Apr 6:54 pm EDT
Extended Forecast for

Valley Forge PA

  • Tonight

    Tonight: Patchy drizzle before 10pm, then patchy drizzle with a slight chance of showers between 10pm and 1am, then patchy drizzle after 1am. Patchy fog. Otherwise, cloudy, with a low around 42. East wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 42 °F

    Patchy
    Drizzle and
    Patchy Fog

  • Friday

    Friday: Widespread dense fog before noon. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 76. East wind 5 to 15 mph becoming southwest in the afternoon.

    High: 76 °F

    Dense Fog
    then Partly
    Sunny

  • Friday Night

    Friday Night: A slight chance of showers before 2am. Partly cloudy, with a low around 60. South wind 5 to 10 mph. Chance of precipitation is 20%.

    Low: 60 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 81. Southwest wind 5 to 10 mph becoming southeast in the morning. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. East wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers. High near 71. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 71 °F

    Showers

  • Sunday Night

    Sunday Night: Showers likely before 8pm. Partly cloudy, with a low around 40. Chance of precipitation is 60%.

    Low: 40 °F

    Showers
    Likely then
    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy drizzle before 10pm, then patchy drizzle with a slight chance of showers between 10pm and 1am, then patchy drizzle after 1am. Patchy fog. Otherwise, cloudy, with a low around 42. East wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Friday
Widespread dense fog before noon. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 76. East wind 5 to 15 mph becoming southwest in the afternoon.
Friday Night
A slight chance of showers before 2am. Partly cloudy, with a low around 60. South wind 5 to 10 mph. Chance of precipitation is 20%.
Saturday
A slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 81. Southwest wind 5 to 10 mph becoming southeast in the morning. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. East wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers. High near 71. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Showers likely before 8pm. Partly cloudy, with a low around 40. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 55.
Monday Night
Partly cloudy, with a low around 37.
Tuesday
Mostly sunny, with a high near 51.
Tuesday Night
Mostly clear, with a low around 29.
Wednesday
Sunny, with a high near 52.
Wednesday Night
Mostly clear, with a low around 33.
Thursday
Sunny, with a high near 61.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Valley Forge PA
 40.08°N 75.48°W (Elev. 230 ft)
Last Update:
5:51 pm EDT Apr 2, 2026
Forecast Valid:
7pm EDT Apr 2, 2026-6pm EDT Apr 9, 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