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.

A Few Clouds

68°F

20°C

Humidity 73%
Wind Speed Vrbl 3 mph
Barometer 30.00 in (1015.5 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 17 May 3:54 am EDT
Extended Forecast for

Valley Forge PA

  • Overnight

    Overnight: A chance of sprinkles before 5am. Mostly clear, with a low around 62. West wind around 5 mph.

    Low: 62 °F

    Chance
    Sprinkles

  • Sunday

    Sunday: Mostly sunny, with a high near 88. West wind around 5 mph.

    High: 88 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 66. Southwest wind around 5 mph becoming calm in the evening.

    Low: 66 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 93. Light south wind increasing to 5 to 10 mph in the afternoon.

    High: 93 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 69. South wind around 5 mph.

    Low: 69 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 94.

    High: 94 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 70%.

    High: 91 °F

    Sunny then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.

    Low: 57 °F

    Showers
    Likely then
    Chance
    Showers

Detailed Forecast

Overnight
A chance of sprinkles before 5am. Mostly clear, with a low around 62. West wind around 5 mph.
Sunday
Mostly sunny, with a high near 88. West wind around 5 mph.
Sunday Night
Partly cloudy, with a low around 66. Southwest wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 93. Light south wind increasing to 5 to 10 mph in the afternoon.
Monday Night
Mostly clear, with a low around 69. South wind around 5 mph.
Tuesday
Mostly sunny, with a high near 94.
Tuesday Night
Partly cloudy, with a low around 72.
Wednesday
Showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Thursday
Partly sunny, with a high near 72.
Thursday Night
Mostly cloudy, with a low around 52.
Friday
A chance of showers. Partly sunny, with a high near 67. Chance of precipitation is 40%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 51. Chance of precipitation is 30%.
Saturday
A chance of showers. Mostly cloudy, with a high near 69. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Valley Forge PA
 40.08°N 75.48°W (Elev. 230 ft)
Last Update:
4:08 am EDT May 17, 2026
Forecast Valid:
4am EDT May 17, 2026-6pm EDT May 23, 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