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

Hot Weather in the West; Heavy Rainfall and Flooding in the Southwest

Hot to extremely hot temperatures are in place much of this week across parts of California and the interior Northwest U.S, with the Pacific Northwest carrying the potential for record-breaking high temperatures. Monsoonal moisture over the Southwest U.S. may lead to heavy rainfall and instances of flash flooding through Wednesday. Read More >

Current conditions at

Allentown, Lehigh Valley International Airport (KABE)

Lat: 40.65°NLon: 75.45°WElev: 384ft.

Mostly Cloudy

73°F

23°C

Humidity 44%
Wind Speed SE 7 mph
Barometer 30.12 in (1019.7 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 2 Sep 1:51 pm EDT
Extended Forecast for

Allentown PA

  • This Afternoon

    This Afternoon: Sunny, with a high near 79. East wind around 5 mph.

    High: 79 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 54. Calm wind.

    Low: 54 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 81. Calm wind.

    High: 81 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57. Calm wind.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: A chance of showers after 2pm. Mostly sunny, with a high near 84. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 84 °F

    Mostly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 63 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers before 8am. Partly sunny, with a high near 82. Chance of precipitation is 30%.

    High: 82 °F

    Chance
    Showers then
    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers between 8pm and 2am. Partly cloudy, with a low around 63. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers after 2pm. Mostly sunny, with a high near 80. Chance of precipitation is 40%.

    High: 80 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 79. East wind around 5 mph.
Tonight
Mostly clear, with a low around 54. Calm wind.
Wednesday
Sunny, with a high near 81. Calm wind.
Wednesday Night
Mostly clear, with a low around 57. Calm wind.
Thursday
A chance of showers after 2pm. Mostly sunny, with a high near 84. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Friday
A chance of showers before 8am. Partly sunny, with a high near 82. Chance of precipitation is 30%.
Friday Night
A chance of showers between 8pm and 2am. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
Saturday
A chance of showers after 2pm. Mostly sunny, with a high near 80. Chance of precipitation is 40%.
Saturday Night
A chance of showers before 2am. Partly cloudy, with a low around 55. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
Mostly clear, with a low around 51.
Monday
Sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Allentown PA
 40.59°N 75.47°W (Elev. 299 ft)
Last Update:
4:14 am EDT Sep 2, 2025
Forecast Valid:
2pm EDT Sep 2, 2025-6pm EDT Sep 8, 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