| National Weather Service Forecast for:
Allentown PA Issued by: National Weather Service Philadelphia, PA |
||||||||||||||||||
| Updated: 6:05 pm EST Dec 17, 2025 | ||||||||||||||||||
|
| Tonight |
Patchy freezing fog after 11pm. Mostly cloudy, with a low around 24. West wind around 5 mph becoming calm in the evening. |
| Thursday |
Patchy freezing fog before 10am. Partly sunny, with a high near 43. Light and variable wind becoming southeast 5 to 10 mph in the afternoon. |
| Thursday Night |
Rain, with thunderstorms also possible after 4am. Temperature rising to around 55 by 5am. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible. |
| Friday |
Showers likely and possibly a thunderstorm before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 55. Breezy, with a south wind 15 to 20 mph becoming west in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible. |
| Friday Night |
Partly cloudy, with a low around 25. Breezy, with a west wind 15 to 20 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 40 mph. |
| Saturday |
Partly sunny, with a high near 38. |
| Saturday Night |
Mostly cloudy, with a low around 32. |
| Sunday |
Mostly sunny, with a high near 45. |
| Sunday Night |
Mostly clear, with a low around 24. |
| Monday |
Sunny, with a high near 35. |
| Monday Night |
Mostly cloudy, with a low around 24. |
| Tuesday |
A chance of rain and snow. Mostly cloudy, with a high near 41. Chance of precipitation is 30%. |
| Tuesday Night |
Mostly cloudy, with a low around 31. |
| Wednesday |
Partly sunny, with a high near 41. |
Forecast from NOAA-NWS for Allentown PA.
