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

Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Current conditions at

Allentown, Lehigh Valley International Airport (KABE)

Lat: 40.65°NLon: 75.45°WElev: 384ft.

Overcast

73°F

23°C

Humidity 94%
Wind Speed NW 3 mph
Barometer 29.90 in (1012.3 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 17 Aug 9:51 pm EDT
Extended Forecast for

3 Miles W Chapman PA

  • Tonight

    Tonight: Mostly cloudy, with a low around 62. Northeast wind 5 to 10 mph.

    Low: 62 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 73. East wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 73 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A slight chance of showers. Mostly cloudy, with a low around 60. Southeast wind around 5 mph. Chance of precipitation is 20%.

    Low: 60 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 75. East wind 5 to 10 mph.

    High: 75 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 59. East wind 5 to 10 mph.

    Low: 59 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers after 2pm. Partly sunny, with a high near 77. Chance of precipitation is 30%.

    High: 77 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers before 8pm. Partly cloudy, with a low around 61. Chance of precipitation is 30%.

    Low: 61 °F

    Chance
    Showers then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 62. Northeast wind 5 to 10 mph.
Monday
Mostly cloudy, with a high near 73. East wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
A slight chance of showers. Mostly cloudy, with a low around 60. Southeast wind around 5 mph. Chance of precipitation is 20%.
Tuesday
Partly sunny, with a high near 75. East wind 5 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 59. East wind 5 to 10 mph.
Wednesday
A chance of showers after 2pm. Partly sunny, with a high near 77. Chance of precipitation is 30%.
Wednesday Night
A chance of showers before 8pm. Partly cloudy, with a low around 61. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 80.
Thursday Night
Mostly clear, with a low around 59.
Friday
Sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 60.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.
Sunday
A chance of showers. Partly sunny, with a high near 81. Chance of precipitation is 50%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Chapman PA
 40.77°N 75.47°W (Elev. 617 ft)
Last Update:
4:11 pm EDT Aug 17, 2025
Forecast Valid:
10pm EDT Aug 17, 2025-6pm EDT Aug 24, 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