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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

Allentown, Lehigh Valley International Airport (KABE)

Lat: 40.65°NLon: 75.45°WElev: 384ft.

Partly Cloudy

43°F

6°C

Humidity 71%
Wind Speed NE 6 mph
Barometer 29.95 in (1014.2 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 22 Mar 12:51 am EDT
Extended Forecast for

Bethlehem PA

  • Overnight

    Overnight: Mostly cloudy, with a low around 43. Southeast wind around 5 mph.

    Low: 43 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms, mainly after 5pm. Cloudy, then gradually becoming mostly sunny, with a high near 71. Southwest wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.

    High: 71 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 11pm, then showers after 11pm. Low around 41. North wind around 5 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 41 °F

    Showers

  • Monday

    Monday: A slight chance of showers before 2pm. Cloudy through mid morning, then gradual clearing, with a high near 51. Northwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 51 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Clear, with a low around 29. North wind 5 to 10 mph.

    Low: 29 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 55.

    High: 55 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 43. Southeast wind around 5 mph.
Sunday
A chance of showers and thunderstorms, mainly after 5pm. Cloudy, then gradually becoming mostly sunny, with a high near 71. Southwest wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
A chance of showers and thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 11pm, then showers after 11pm. Low around 41. North wind around 5 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Monday
A slight chance of showers before 2pm. Cloudy through mid morning, then gradual clearing, with a high near 51. Northwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Monday Night
Clear, with a low around 29. North wind 5 to 10 mph.
Tuesday
Sunny, with a high near 49.
Tuesday Night
Mostly cloudy, with a low around 33.
Wednesday
Mostly cloudy, with a high near 55.
Wednesday Night
Mostly cloudy, with a low around 35.
Thursday
A chance of rain between 8am and 2pm. Mostly cloudy, with a high near 59. Chance of precipitation is 30%.
Thursday Night
Rain likely. Mostly cloudy, with a low around 40. Chance of precipitation is 70%.
Friday
A chance of rain. Mostly sunny, with a high near 51. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 27.
Saturday
Sunny, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Bethlehem PA
 40.63°N 75.38°W (Elev. 299 ft)
Last Update:
4:09 pm EDT Mar 21, 2026
Forecast Valid:
1am EDT Mar 22, 2026-6pm EDT Mar 28, 2026
 
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