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

Heavy Rainfall in the East Wednesday; Hot Temperatures Continue in Coastal Southern California

Heavy to excessive rainfall may lead to flooding Wednesday over southwest Pennsylvania into northern West Virginia, and western Maryland. Flood Watches have been issued. An extended period of hot weather will continue for parts of coastal southern California including Los Angeles through Thursday. Heat Advisories remain in effect. Read More >

Current conditions at

Quakertown Airport (KUKT)

Lat: 40.44°NLon: 75.38°WElev: 509ft.

Fair

55°F

13°C

Humidity 88%
Wind Speed NA
Barometer 29.97 in
Dewpoint 52°F (11°C)
Visibility 8.00 mi
Last update 20 May 10:35 pm EDT
Extended Forecast for

Coopersburg PA

  • Tonight

    Tonight: A chance of rain after 5am. Mostly cloudy, with a low around 51. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 51 °F

    Mostly Cloudy
    then Chance
    Rain

  • Wednesday

    Wednesday: Periods of rain, mainly after 8am. High near 57. Southeast wind 10 to 15 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 57 °F

    Rain

  • Wednesday Night

    Wednesday Night: Periods of rain. Patchy fog after 11pm. Low around 48. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 48 °F

    Rain and
    Patchy Fog

  • Thursday

    Thursday: Periods of rain before 2pm, then showers after 2pm. High near 56. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 56 °F

    Showers

  • Thursday Night

    Thursday Night: Showers, mainly before 8pm. Low around 47. Northeast wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 47 °F

    Showers then
    Chance
    Showers

  • Friday

    Friday: A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 60. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 60 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers before 8pm. Partly cloudy, with a low around 45. Chance of precipitation is 30%.

    Low: 45 °F

    Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of rain after 5am. Mostly cloudy, with a low around 51. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Periods of rain, mainly after 8am. High near 57. Southeast wind 10 to 15 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Periods of rain. Patchy fog after 11pm. Low around 48. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday
Periods of rain before 2pm, then showers after 2pm. High near 56. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Showers, mainly before 8pm. Low around 47. Northeast wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 60. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A chance of showers before 8pm. Partly cloudy, with a low around 45. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 62.
Saturday Night
Mostly clear, with a low around 45.
Sunday
Mostly sunny, with a high near 67.
Sunday Night
Partly cloudy, with a low around 49.
Memorial Day
A chance of showers. Partly sunny, with a high near 70. Chance of precipitation is 30%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 52. Chance of precipitation is 40%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 70. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Coopersburg PA
 40.54°N 75.39°W (Elev. 404 ft)
Last Update:
6:14 pm EDT May 20, 2025
Forecast Valid:
10pm EDT May 20, 2025-6pm EDT May 27, 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