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

40°F

4°C

Humidity 100%
Wind Speed E 5 mph
Barometer 30.24 in (1024.1 mb)
Dewpoint 40°F (4°C)
Visibility 5.00 mi
Wind Chill36°F (2°C)
Last update 6 Mar 1:54 am EST
Extended Forecast for

Valley Forge PA

  • Overnight

    Overnight: A chance of rain before 3am. Patchy fog. Otherwise, cloudy, with a low around 37. Northeast wind around 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Chance Rain
    and Patchy
    Fog

  • Friday

    Friday: A slight chance of rain after 4pm. Areas of fog. Otherwise, cloudy, with a high near 47. Northeast wind around 10 mph. Chance of precipitation is 20%.

    High: 47 °F

    Areas Fog
    then Slight
    Chance Rain
    and Patchy
    Fog

  • Friday Night

    Friday Night: A chance of rain, mainly between 11pm and 5am. Widespread fog, mainly before 5am. Otherwise, cloudy, with a low around 39. East wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Chance Rain
    and Fog

  • Saturday

    Saturday: Widespread fog, mainly before 7am. Otherwise, cloudy, with a high near 58. Calm wind becoming south around 5 mph in the afternoon.

    High: 58 °F

    Fog then
    Mostly Cloudy

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Patchy fog before 10pm. Otherwise, mostly cloudy, with a low around 52. Southwest wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 52 °F

    Showers
    Likely and
    Patchy Fog

  • Sunday

    Sunday: A slight chance of showers. Partly sunny, with a high near 65. Chance of precipitation is 20%.

    High: 65 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

Detailed Forecast

Overnight
A chance of rain before 3am. Patchy fog. Otherwise, cloudy, with a low around 37. Northeast wind around 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A slight chance of rain after 4pm. Areas of fog. Otherwise, cloudy, with a high near 47. Northeast wind around 10 mph. Chance of precipitation is 20%.
Friday Night
A chance of rain, mainly between 11pm and 5am. Widespread fog, mainly before 5am. Otherwise, cloudy, with a low around 39. East wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Widespread fog, mainly before 7am. Otherwise, cloudy, with a high near 58. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Patchy fog before 10pm. Otherwise, mostly cloudy, with a low around 52. Southwest wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A slight chance of showers. Partly sunny, with a high near 65. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 44.
Monday
Mostly sunny, with a high near 67.
Monday Night
Mostly clear, with a low around 50.
Tuesday
Mostly sunny, with a high near 74.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.
Wednesday
A chance of showers. Mostly cloudy, with a high near 71. Chance of precipitation is 40%.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.
Thursday
A chance of showers. Partly sunny, with a high near 55. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Valley Forge PA
 40.1°N 75.48°W (Elev. 200 ft)
Last Update:
1:34 am EST Mar 6, 2026
Forecast Valid:
2am EST Mar 6, 2026-6pm EDT Mar 12, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation