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

35°F

2°C

Humidity 76%
Wind Speed NE 3 mph
Barometer 29.80 in (1008.9 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 14 Mar 12:54 am EDT
Extended Forecast for

Valley Forge PA

  • Overnight

    Overnight: Mostly clear, with a low around 37. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: 37 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 52. Breezy, with a west wind 15 to 20 mph, with gusts as high as 40 mph.

    High: 52 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 34. West wind around 5 mph becoming calm in the evening.

    Low: 34 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Cloudy, with a high near 53. Southeast wind 5 to 15 mph, with gusts as high as 30 mph.

    High: 53 °F

    Cloudy

  • Sunday Night

    Sunday Night: Rain, mainly after 2am. Low around 47. Southeast wind 10 to 15 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 47 °F

    Chance Rain
    then Rain

  • Monday

    Monday: Showers, with thunderstorms also possible after 11am. High near 66. Breezy. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 66 °F

    Showers and
    Breezy

  • Monday Night

    Monday Night: Rain showers before 2am, then a chance of rain showers, snow showers, and freezing rain. Some thunder is also possible. Low around 32. Breezy. Chance of precipitation is 80%.

    Low: 32 °F

    Breezy.
    Showers then
    Wintry Mix

  • Tuesday

    Tuesday: A chance of rain showers, snow showers, and freezing rain before 8am. Mostly cloudy, with a high near 38. Breezy. Chance of precipitation is 30%.

    High: 38 °F

    Chance Wintry
    Mix then
    Mostly Cloudy
    and Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 22.

    Low: 22 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 37. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.
Saturday
Sunny, with a high near 52. Breezy, with a west wind 15 to 20 mph, with gusts as high as 40 mph.
Saturday Night
Increasing clouds, with a low around 34. West wind around 5 mph becoming calm in the evening.
Sunday
Cloudy, with a high near 53. Southeast wind 5 to 15 mph, with gusts as high as 30 mph.
Sunday Night
Rain, mainly after 2am. Low around 47. Southeast wind 10 to 15 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Showers, with thunderstorms also possible after 11am. High near 66. Breezy. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Monday Night
Rain showers before 2am, then a chance of rain showers, snow showers, and freezing rain. Some thunder is also possible. Low around 32. Breezy. Chance of precipitation is 80%.
Tuesday
A chance of rain showers, snow showers, and freezing rain before 8am. Mostly cloudy, with a high near 38. Breezy. Chance of precipitation is 30%.
Tuesday Night
Partly cloudy, with a low around 22.
Wednesday
Partly sunny, with a high near 40.
Wednesday Night
Cloudy, with a low around 28.
Thursday
Mostly cloudy, with a high near 49.
Thursday Night
Mostly cloudy, with a low around 34.
Friday
Mostly cloudy, with a high near 51.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Valley Forge PA
 40.1°N 75.48°W (Elev. 200 ft)
Last Update:
9:46 pm EDT Mar 13, 2026
Forecast Valid:
12am EDT Mar 14, 2026-6pm EDT Mar 20, 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