National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Pottstown, Pottstown Limerick Airport (KPTW)

Lat: 40.24°NLon: 75.55°WElev: 288ft.

Mostly Cloudy

55°F

13°C

Humidity 83%
Wind Speed E 5 mph
Barometer 29.92 in (1012.9 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Wind Chill54°F (12°C)
Last update 18 Apr 9:54 pm EDT
Extended Forecast for

Valley Forge PA

Freeze Watch April 21, 12:00am until April 21, 09:00am
Click here for hazard details and duration
Freeze Watch

  • Tonight

    Tonight: A chance of showers, mainly after 4am. Patchy fog before 3am, then patchy fog after 4am. Otherwise, mostly cloudy, with a low around 49. East wind 5 to 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 49 °F

    Mostly Cloudy
    then Chance
    Showers and
    Patchy Fog

  • Sunday

    Sunday: Showers, mainly before 2pm. High near 55. Northwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 55 °F

    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38. West wind around 5 mph.

    Low: 38 °F

    Mostly Clear

  • Monday

    Monday: A slight chance of showers before 2pm. Mostly sunny, with a high near 51. Northwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 51 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Patchy frost after 1am. Otherwise, mostly clear, with a low around 30. North wind around 5 mph.

    Low: 30 °F

    Partly Cloudy
    then Patchy
    Frost

  • Tuesday

    Tuesday: Areas of frost before 9am. Otherwise, sunny, with a high near 54.

    High: 54 °F

    Areas Frost
    then Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of showers, mainly after 4am. Patchy fog before 3am, then patchy fog after 4am. Otherwise, mostly cloudy, with a low around 49. East wind 5 to 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Showers, mainly before 2pm. High near 55. Northwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Mostly clear, with a low around 38. West wind around 5 mph.
Monday
A slight chance of showers before 2pm. Mostly sunny, with a high near 51. Northwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Monday Night
Patchy frost after 1am. Otherwise, mostly clear, with a low around 30. North wind around 5 mph.
Tuesday
Areas of frost before 9am. Otherwise, sunny, with a high near 54.
Tuesday Night
Partly cloudy, with a low around 41.
Wednesday
Partly sunny, with a high near 66.
Wednesday Night
Mostly clear, with a low around 43.
Thursday
Sunny, with a high near 72.
Thursday Night
Mostly clear, with a low around 50.
Friday
Mostly sunny, with a high near 76.
Friday Night
Partly cloudy, with a low around 51.
Saturday
A chance of showers. Partly sunny, with a high near 69. Chance of precipitation is 40%.
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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:
4:11 pm EDT Apr 18, 2026
Forecast Valid:
10pm EDT Apr 18, 2026-6pm EDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation