Your Local News | Allentown, Bethlehem & Easton
Play Live Radio
Next Up:
Available On Air Stations
Local News

Memorial Day weekend weather: Keep those outdoor plans

forecast 05/25/23
NWS Mount Holly
The Lehigh Valley can expect sunny and dry days for the upcoming Memorial Day weekend.

ALLENTOWN, Pa. — The Memorial Day weekend is shaping up to be a delightful time for a pool visit or other outdoor activity in the Lehigh Valley with sunny and pleasant weather in store.

  • The Memorial Day weekend in the Lehigh Valley promises ideal conditions for outdoor fun
  • Sunny weather will prevail throughout the weekend, with cooler temperatures early which could warm up into the 80s by Sunday and Monday
  • Though no rain is expected, a low pressure system coming up from the South will govern temperatures here

According to a tweet from National Weather Service in Mt. Holly, NJ, Thursday's weather will feature abundant sunshine through the end of the work week, with cooler temperatures than earlier in the week.

Sliding into into the Memorial Day weekend, the Lehigh Valley can anticipate predominantly dry conditions, thanks to the arrival of a high-pressure system.

As cold air moves in at higher altitudes, the boundary layer will deepen and become notably dry. This will lead to a rapid decline in dew points, potentially dropping to the low 30s. Temperatures will reach the upper 60s or near 70 degrees for most areas, presenting a departure of 5-8 degrees below the seasonal average.

In Allentown specifically, Thursday and Friday will be sunny, with temperatures rising to around 75 degrees during the day and falling to about 45 degrees overnight.

As the long weekend approaches, we can expect dry and slightly cooler weather, accompanied by mostly clear skies and a scattering of clouds, and a beautiful as well as slightly warmer weekend to enjoy.

Meteorologist Bobby Martrich from the Eastern Pa. Weather Authority, mostly concurs with the NWS prediction but also takes the European model into consideration.

A low pressure system coming up from the south could bring not rain but cloud cover to the southern part of the Lehigh Valley on Sunday.

"Temperatures will overperform over time."
EPAWA Meteorologist Bobby Martrich

The cloud "boundaries" will control the area's cloudiness and temperatures, he said, meaning that it could get warmer in the more northern locations and into the Poconos. Specifically, while it could be 70 in Macungie, it could go up to the 80s in Stroudsburg.

"We don't expect any rain from it," he said.

Monday starts a warm up into next week, Martrich said, which will get even warmer if there is no rain.

"Temperatures will overperform over time," he said.