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

Allentown, Lehigh Valley International Airport (KABE)

Lat: 40.65°NLon: 75.45°WElev: 384ft.

Fog/Mist

36°F

2°C

Humidity 93%
Wind Speed SW 7 mph
Barometer 30.12 in (1020.4 mb)
Dewpoint 34°F (1°C)
Visibility 5.00 mi
Wind Chill30°F (-1°C)
Last update 17 Feb 11:51 am EST
Extended Forecast for

Mertztown PA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 47. West wind around 5 mph becoming calm.

    High: 47 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 35. Calm wind.

    Low: 35 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Rain, mainly after 1pm. High near 44. Calm wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 44 °F

    Chance Rain
    then Rain

  • Wednesday Night

    Wednesday Night: A slight chance of rain before 1am. Mostly cloudy, with a low around 36. West wind around 5 mph becoming northwest after midnight. Chance of precipitation is 20%.

    Low: 36 °F

    Slight Chance
    Rain

  • Thursday

    Thursday: A chance of rain after 1pm. Mostly cloudy, with a high near 46. North wind around 5 mph becoming east in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 46 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday Night

    Thursday Night: A chance of rain before 10pm, then a chance of rain and snow. Cloudy, with a low around 34. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 34 °F

    Chance
    Rain/Snow

  • Friday

    Friday: Rain. High near 42. Chance of precipitation is 90%.

    High: 42 °F

    Rain

  • Friday Night

    Friday Night: A chance of rain. Mostly cloudy, with a low around 34. Chance of precipitation is 30%.

    Low: 34 °F

    Chance Rain

  • Saturday

    Saturday: A chance of rain before 1pm. Partly sunny, with a high near 44. Chance of precipitation is 30%.

    High: 44 °F

    Chance Rain

Detailed Forecast

This Afternoon
Partly sunny, with a high near 47. West wind around 5 mph becoming calm.
Tonight
Mostly cloudy, with a low around 35. Calm wind.
Wednesday
Rain, mainly after 1pm. High near 44. Calm wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A slight chance of rain before 1am. Mostly cloudy, with a low around 36. West wind around 5 mph becoming northwest after midnight. Chance of precipitation is 20%.
Thursday
A chance of rain after 1pm. Mostly cloudy, with a high near 46. North wind around 5 mph becoming east in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A chance of rain before 10pm, then a chance of rain and snow. Cloudy, with a low around 34. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain. High near 42. Chance of precipitation is 90%.
Friday Night
A chance of rain. Mostly cloudy, with a low around 34. Chance of precipitation is 30%.
Saturday
A chance of rain before 1pm. Partly sunny, with a high near 44. Chance of precipitation is 30%.
Saturday Night
A chance of snow after 1am. Mostly cloudy, with a low around 29. Chance of precipitation is 30%.
Sunday
A chance of snow. Partly sunny, with a high near 38. Chance of precipitation is 50%.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 26. Chance of precipitation is 40%.
Monday
Partly sunny, with a high near 36.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mertztown PA
 40.5°N 75.66°W (Elev. 499 ft)
Last Update:
4:13 am EST Feb 17, 2026
Forecast Valid:
12pm EST Feb 17, 2026-6pm EST Feb 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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