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.

Fair

70°F

21°C

Humidity 38%
Wind Speed Calm
Barometer 30.43 in (1030.3 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 10 Oct 1:54 pm EDT
Extended Forecast for

Valley Forge PA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 71. East wind around 5 mph.

    High: 71 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 55. East wind around 5 mph becoming calm.

    Low: 55 °F

    Mostly Cloudy

  • Sunday

    Sunday: Rain, with thunderstorms also possible after 5pm. High near 64. East wind 10 to 15 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 64 °F

    Rain Likely
    then Rain

  • Sunday Night

    Sunday Night: Rain and possibly a thunderstorm before 2am, then rain likely. Low around 60. Northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 60 °F

    Rain

  • Columbus Day

    Columbus Day: Rain likely before 8am. Mostly cloudy, with a high near 72. North wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 72 °F

    Rain Likely
    then Partly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers between 8pm and 2am. Mostly cloudy, with a low around 56. Chance of precipitation is 30%.

    Low: 56 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 71. East wind around 5 mph.
Tonight
Mostly cloudy, with a low around 55. East wind around 5 mph becoming calm.
Sunday
Rain, with thunderstorms also possible after 5pm. High near 64. East wind 10 to 15 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday Night
Rain and possibly a thunderstorm before 2am, then rain likely. Low around 60. Northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Columbus Day
Rain likely before 8am. Mostly cloudy, with a high near 72. North wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Partly cloudy, with a low around 57.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
A chance of showers between 8pm and 2am. Mostly cloudy, with a low around 56. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 67.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Mostly sunny, with a high near 64.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.
Friday
A chance of showers. Mostly cloudy, with a high near 65. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Valley Forge PA
 40.1°N 75.45°W (Elev. 200 ft)
Last Update:
4:09 am EDT Oct 10, 2026
Forecast Valid:
2pm EDT Oct 10, 2026-6pm EDT Oct 16, 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