NWS Forecast for Allentown PA

National Weather Service Forecast for: Allentown PA
Issued by: National Weather Service Philadelphia, PA

Updated: 4:09 am EST Dec 5, 2025

Today Mostly Sunny then Slight Chance Snow	Tonight Cloudy	Saturday Partly Sunny	Saturday Night Partly Cloudy	Sunday Mostly Cloudy	Sunday Night Slight Chance Rain/Snow then Slight Chance Snow	Monday Sunny	Monday Night Mostly Clear	Tuesday Partly Sunny
Hi 28 °F	Lo 23 °F	Hi 40 °F	Lo 22 °F	Hi 38 °F	Lo 22 °F	Hi 30 °F	Lo 11 °F	Hi 33 °F

Today	A slight chance of snow after 1pm. Increasing clouds, with a high near 28. Calm wind becoming southeast around 5 mph. Chance of precipitation is 20%.
Tonight	Cloudy, with a low around 23. Calm wind.
Saturday	Partly sunny, with a high near 40. Calm wind becoming west around 5 mph in the afternoon.
Saturday Night	Partly cloudy, with a low around 22. West wind around 5 mph becoming calm.
Sunday	Mostly cloudy, with a high near 38. Calm wind.
Sunday Night	A slight chance of rain and snow before 10pm, then a slight chance of snow between 10pm and 1am. Mostly cloudy, with a low around 22. Chance of precipitation is 20%.
Monday	Sunny, with a high near 30.
Monday Night	Mostly clear, with a low around 11.
Tuesday	Partly sunny, with a high near 33.
Tuesday Night	Mostly cloudy, with a low around 25.
Wednesday	A chance of rain. Mostly cloudy, with a high near 42. Chance of precipitation is 40%.
Wednesday Night	Rain likely. Cloudy, with a low around 33. Chance of precipitation is 60%.
Thursday	A chance of rain. Mostly cloudy, with a high near 41. Chance of precipitation is 30%.

Forecast from NOAA-NWS for Allentown PA.