Allentown, PA Weather - Tomorrow’s Forecast

Christmas Day

Mostly sunny

High:
43°F

Cloudy through mid morning, then becoming mostly sunny, with a high near 43. Light and variable wind becoming west 5 to 10 mph in the morning.

Thursday Night

Mostly cloudy

Overnight low:
20°F

Mostly cloudy, with a low around 20. North wind around 5 mph.