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

Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Current conditions at

Allentown, Lehigh Valley International Airport (KABE)

Lat: 40.65°NLon: 75.45°WElev: 384ft.

Overcast

77°F

25°C

Humidity 56%
Wind Speed S 8 mph
Barometer 29.75 in (1007.2 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 17 Jun 8:51 pm EDT
Extended Forecast for

Bethlehem PA

  • Tonight

    Tonight: Increasing clouds, with a low around 66. Southeast wind around 5 mph.

    Low: 66 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A chance of showers and thunderstorms, mainly before 2pm. Cloudy through mid morning, then gradual clearing, with a high near 89. Breezy, with a south wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 35 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Chance
    Showers and
    Breezy

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 62. West wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 62 °F

    Increasing
    Clouds

  • Juneteenth

    Juneteenth: Mostly cloudy, then gradually becoming sunny, with a high near 82. West wind around 10 mph, with gusts as high as 20 mph.

    High: 82 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Clear, with a low around 59. West wind 5 to 10 mph.

    Low: 59 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Saturday Night

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

    Low: 59 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: A chance of showers. Mostly cloudy, with a low around 61. Chance of precipitation is 50%.

    Low: 61 °F

    Chance
    Showers

Detailed Forecast

Tonight
Increasing clouds, with a low around 66. Southeast wind around 5 mph.
Thursday
A chance of showers and thunderstorms, mainly before 2pm. Cloudy through mid morning, then gradual clearing, with a high near 89. Breezy, with a south wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 35 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Increasing clouds, with a low around 62. West wind 5 to 15 mph, with gusts as high as 25 mph.
Juneteenth
Mostly cloudy, then gradually becoming sunny, with a high near 82. West wind around 10 mph, with gusts as high as 20 mph.
Friday Night
Clear, with a low around 59. West wind 5 to 10 mph.
Saturday
Sunny, with a high near 79.
Saturday Night
Mostly clear, with a low around 59.
Sunday
Sunny, with a high near 83.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 61. Chance of precipitation is 50%.
Monday
Showers. High near 79. Chance of precipitation is 80%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 61. Chance of precipitation is 40%.
Tuesday
Mostly sunny, with a high near 82.
Tuesday Night
Mostly clear, with a low around 60.
Wednesday
Mostly sunny, with a high near 83.
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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:
4:08 pm EDT Jun 17, 2026
Forecast Valid:
9pm EDT Jun 17, 2026-6pm EDT Jun 24, 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