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.

Overcast

59°F

15°C

Humidity 93%
Wind Speed NE 6 mph
Barometer 30.24 in (1023.7 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 24 May 3:54 pm EDT
Extended Forecast for

Valley Forge PA

  • Tonight

    Tonight: A chance of showers, mainly after 4am. Patchy fog. Otherwise, cloudy, with a low around 56. Northeast wind around 5 mph becoming calm after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 56 °F

    Chance
    Showers and
    Patchy Fog

  • Memorial Day

    Memorial Day: Showers and thunderstorms likely, mainly before 2pm. Patchy fog before 9am. Otherwise, cloudy, with a high near 74. South wind around 5 mph becoming west in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Showers
    Likely and
    Patchy Fog
    then Chance
    Showers

  • Monday Night

    Monday Night: Cloudy, with a low around 59. Calm wind.

    Low: 59 °F

    Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 79. Calm wind becoming east around 5 mph.

    High: 79 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 62. Southwest wind around 5 mph becoming calm.

    Low: 62 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 83.

    High: 83 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 63.

    Low: 63 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of showers, mainly after 4am. Patchy fog. Otherwise, cloudy, with a low around 56. Northeast wind around 5 mph becoming calm after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Memorial Day
Showers and thunderstorms likely, mainly before 2pm. Patchy fog before 9am. Otherwise, cloudy, with a high near 74. South wind around 5 mph becoming west in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
Cloudy, with a low around 59. Calm wind.
Tuesday
Mostly cloudy, with a high near 79. Calm wind becoming east around 5 mph.
Tuesday Night
Mostly cloudy, with a low around 62. Southwest wind around 5 mph becoming calm.
Wednesday
Partly sunny, with a high near 83.
Wednesday Night
Mostly cloudy, with a low around 63.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 55.
Friday
Sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 55.
Saturday
Mostly sunny, with a high near 76.
Saturday Night
Partly cloudy, with a low around 55.
Sunday
Mostly sunny, with a high near 72.
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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:
4:07 pm EDT May 24, 2026
Forecast Valid:
4pm EDT May 24, 2026-6pm EDT May 31, 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