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

Heavy to Excessive Rainfall for the Southwest U.S.; Watching for Possible East Coast Storm

Thunderstorms and a chance for some isolated flash flooding will continue today in the Southwest U.S. before an influx of tropical moisture from Priscilla brings widespread heavy rainfall and a flash flooding threat late this week into this weekend. A coastal storm may develop off the southeast U.S. coast Friday night and drift north just off the Mid-Atlantic coast through the weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Allentown, Lehigh Valley International Airport (KABE)

Lat: 40.65°NLon: 75.45°WElev: 384ft.

Fair

60°F

16°C

Humidity 50%
Wind Speed N 7 mph
Barometer 30.17 in (1021.4 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 8 Oct 6:51 pm EDT
Extended Forecast for

Chapman PA

Freeze Watch October 9, 10:00pm until October 10, 09:00am
Click here for hazard details and duration
Freeze Watch

  • Tonight

    Tonight: Clear, with a low around 41. North wind 10 to 15 mph.

    Low: 41 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 60. North wind 10 to 15 mph.

    High: 60 °F

    Sunny

  • Thursday Night

    Thursday Night: Widespread frost, mainly after 5am. Otherwise, clear, with a low around 36. Northeast wind around 5 mph.

    Low: 36 °F

    Clear then
    Frost

  • Friday

    Friday: Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 63. Northeast wind around 5 mph becoming south in the afternoon.

    High: 63 °F

    Frost then
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 42. South wind around 5 mph becoming calm.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers after 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 30%.

    Low: 49 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A chance of showers. Mostly cloudy, with a high near 61. Chance of precipitation is 30%.

    High: 61 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers. Mostly cloudy, with a low around 47. Chance of precipitation is 50%.

    Low: 47 °F

    Chance
    Showers

Detailed Forecast

Tonight
Clear, with a low around 41. North wind 10 to 15 mph.
Thursday
Sunny, with a high near 60. North wind 10 to 15 mph.
Thursday Night
Widespread frost, mainly after 5am. Otherwise, clear, with a low around 36. Northeast wind around 5 mph.
Friday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 63. Northeast wind around 5 mph becoming south in the afternoon.
Friday Night
Mostly clear, with a low around 42. South wind around 5 mph becoming calm.
Saturday
Mostly sunny, with a high near 67.
Saturday Night
A chance of showers after 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 30%.
Sunday
A chance of showers. Mostly cloudy, with a high near 61. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 47. Chance of precipitation is 50%.
Columbus Day
A chance of showers. Partly sunny, with a high near 60. Chance of precipitation is 30%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 49. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 65.
Tuesday Night
Partly cloudy, with a low around 50.
Wednesday
Mostly sunny, with a high near 69.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chapman PA
 40.76°N 75.41°W (Elev. 722 ft)
Last Update:
5:16 pm EDT Oct 8, 2025
Forecast Valid:
7pm EDT Oct 8, 2025-6pm EDT Oct 15, 2025
 
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