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.

Mostly Cloudy

63°F

17°C

Humidity 100%
Wind Speed Calm
Barometer 29.63 in (1003.0 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 12 Mar 12:54 am EDT
Extended Forecast for

Valley Forge PA

  • Overnight

    Overnight: A chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 43. Southwest wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 43 °F

    Chance
    Showers

  • Thursday

    Thursday: Rain before 2pm, then a chance of rain and snow between 2pm and 3pm, then a chance of snow after 3pm. Temperature falling to around 39 by 5pm. 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: 50 °F⇓

    Rain and
    Breezy then
    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: Mostly cloudy during the early evening, then gradual clearing, with a low around 29. Northwest wind 5 to 10 mph.

    Low: 29 °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 35 mph.

    High: 49 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 39. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 39 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 34.

    Low: 34 °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 47. Chance of precipitation is 90%.

    Low: 47 °F

    Chance Rain
    then Rain

Detailed Forecast

Overnight
A chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 43. Southwest wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Rain before 2pm, then a chance of rain and snow between 2pm and 3pm, then a chance of snow after 3pm. Temperature falling to around 39 by 5pm. 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 29. Northwest wind 5 to 10 mph.
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 35 mph.
Friday Night
Partly cloudy, with a low around 39. South wind around 15 mph, with gusts as high as 25 mph.
Saturday
Sunny, with a high near 51.
Saturday Night
Mostly cloudy, with a low around 34.
Sunday
Cloudy, with a high near 54.
Sunday Night
Rain, mainly after 2am. Low around 47. 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 28. Chance of precipitation is 60%.
Tuesday
Mostly sunny, with a high near 37.
Tuesday Night
Mostly clear, with a low around 22.
Wednesday
Mostly sunny, with a high near 39.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Valley Forge PA
 40.08°N 75.48°W (Elev. 230 ft)
Last Update:
10:05 pm EDT Mar 11, 2026
Forecast Valid:
1am EDT Mar 12, 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation