Stormtracker 16 Meteorologist Ally Gallo takes a look at when that typically happens here in Northeastern and Central PA.
PENNSYLVANIA, USA — According to records kept by the National Weather Service, the average first 90-degree day of the year in the Scranton area is on June 10; in Williamsport, it’s a bit earlier on June 2. So hitting 90 this week in the Scranton area would be about 3 weeks ahead of schedule.
In Williamsport, the first 90-degree day of the year happened about two and a half months ahead of schedule, on April 16, and that was one of the earliest dates ever for it to hit 90 degrees in Williamsport. In fact, it happened earlier only once since record-keeping began more than 100 years ago.
Speaking of that, the earliest first 90-degree day of the year for both Scranton and Williamsport wasn’t that long ago. In 2023, it hit 90 in both Northeastern and Central PA on April 14.
There have been years when it never hit 90 the entire summer season, most recently in 2004 here in Scranton.
The past two years, the first 90-degree day happened towards the end of June. The year before that, in 2023, was the record-breaking year in April, and the few years before that, it happened around now, the week of May 20.
In Scranton, we typically see 10 90-degree days throughout the year, and in Williamsport, we see about 16 90-degree days.
The average last 90-degree day of the year happens around August 15 in Scranton and August 23 in Williamsport.