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

Briefing for Impacts from Hurricane Erin through Sunday

Hurricane Erin will continue to bring coastal and marine hazards to the coasts of New Jersey and Delaware through the weekend. Coastal flooding, high risk of rip currents, beach erosion, and dangerous marine conditions are forecast. View this briefing for details on these threats. Read More >

Current conditions at

Pottstown, Pottstown Limerick Airport (KPTW)

Lat: 40.24°NLon: 75.55°WElev: 288ft.

Fair

60°F

16°C

Humidity 84%
Wind Speed Calm
Barometer 30.10 in (1018.9 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 23 Aug 1:54 am EDT
Extended Forecast for

Frederick PA

  • Overnight

    Overnight: Clear, with a low around 57. Calm wind.

    Low: 57 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 83. Light south wind increasing to 5 to 10 mph in the afternoon.

    High: 83 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 63. South wind around 5 mph.

    Low: 63 °F

    Mostly Clear

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 5pm. Partly sunny, with a high near 83. South wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8pm. Mostly cloudy, with a low around 66. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Showers
    Likely

  • Monday

    Monday: A chance of showers and thunderstorms. Mostly sunny, with a high near 81. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 57. Calm wind.
Saturday
Sunny, with a high near 83. Light south wind increasing to 5 to 10 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 63. South wind around 5 mph.
Sunday
A chance of showers, with thunderstorms also possible after 5pm. Partly sunny, with a high near 83. South wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8pm. Mostly cloudy, with a low around 66. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 81. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 53.
Wednesday
Sunny, with a high near 75.
Wednesday Night
Mostly clear, with a low around 52.
Thursday
Sunny, with a high near 77.
Thursday Night
Mostly clear, with a low around 54.
Friday
Mostly sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Frederick PA
 40.29°N 75.56°W (Elev. 299 ft)
Last Update:
4:10 pm EDT Aug 22, 2025
Forecast Valid:
2am EDT Aug 23, 2025-6pm EDT Aug 29, 2025
 
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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