Lower Merion families planning trick-or-treat routes can expect a warm, dry Halloween on Saturday, Oct. 31.
The National Weather Service's Mt. Holly, New Jersey, branch is forecasting mostly sunny skies and a high near 70 for the greater Philadelphia region on Halloween, Patch reported. The forecast caps a stretch of dry, warm autumn weather running through the entire week.
"A picture-perfect week lies ahead with dry conditions expected throughout," the NWS Mt. Holly branch said in a statement, according to Patch reporter Justin Heinze. "Temperatures will also be warming with highs in the low to mid 70s by Friday."
Friday, Oct. 30, is expected to be the warmest day of the week, with a high near 76. Halloween daytime sun and warmer temperatures could favor lighter costumes.
Temperatures on Oct. 31 are predicted to drop to around 52 degrees after dark, though some areas could see lows in the mid-40s. Cloud cover is expected to move in around dusk.
The mild outlook is a shift from earlier in October, when the NWS placed the region under a "slight risk" severe weather category. That mid-October forecast called for wind gusts of 25 to 35 miles per hour and a possible tornado threat across eastern Pennsylvania, Patch reported at the time.
It is also a change from 2024, when Halloween temperatures in Philadelphia reached 82 degrees. That tied 1946 as the hottest Halloween on record, according to the NWS.
Lower Merion Township does not list official trick-or-treat hours or Halloween events on its website. Families should check with their borough or neighborhood for local start times.
Week-ahead forecast (NWS, via Patch):
- Wednesday, Oct. 28: Mostly sunny, high near 67. Calm wind.
- Thursday, Oct. 29: Mostly sunny, high near 70.
- Friday, Oct. 30: Sunny, high near 76.
- Friday night (Mischief Night): Partly cloudy, low around 51.
- Saturday, Oct. 31 (Halloween): Mostly sunny, high near 70.
- Saturday night: Mostly cloudy, low around 52.
- Sunday, Nov. 1: Mostly cloudy, high near 70.
