Weather
Philadelphia, PA Weather Oct. 25-31: Frost Before Halloween
Philadelphia, PA – A chilly start to the final week of October will bring frost and freezing temperatures to portions of eastern Pennsylvania and New Jersey before a noticeable warmup sends afternoon
By Wesley Grant · 2026-10-24T20:13:51.815Z
Philadelphia, PA – A chilly start to the final week of October will bring frost and freezing temperatures to portions of eastern Pennsylvania and New Jersey before a noticeable warmup sends afternoon highs toward 70 degrees just in time for Halloween on Saturday, Oct. 31.
According to the National Weather Service in Philadelphia/Mount Holly, mainly clear and dry weather will continue through the upcoming week, with the coldest conditions expected Saturday night into Sunday morning, Oct. 25.
Forecasters warn that frost and freeze conditions are expected across much of the region overnight, particularly in inland communities where temperatures could fall into the lower 30s.
Mount Pocono is forecast to drop near 32 degrees Sunday morning, while Allentown could reach 33 degrees. Reading and New Brunswick are expected to fall into the middle 30s.
Philadelphia will remain somewhat warmer, with Sunday morning temperatures near 39 degrees.
Residents in colder locations should consider protecting sensitive outdoor plants as temperatures approach or fall below freezing.
Halloween Warmup Could Bring Highs Near 70 Degrees
Following the chilly weekend, temperatures will gradually climb across the region.
Philadelphia is expected to reach 68 degrees Sunday, followed by 70 degrees Monday and 71 degrees Friday.
By Halloween Saturday, Oct. 31, Philadelphia is forecast to reach approximately 68 degrees, with an overnight low near 50 degrees.
Trenton could reach 67 degrees Saturday, while Atlantic City is projected near 62 degrees.
Farther inland, Allentown could see a Halloween high around 67 degrees.
The National Weather Service expects mainly clear and dry conditions to persist into next weekend, providing a favorable early outlook for Halloween activities.
However, specific evening conditions could change as the holiday approaches.
Residents should continue monitoring updated forecasts at weather.gov/phi.