Philadelphia, PA – Summer 2026 is already proving hotter than average across much of eastern Pennsylvania, New Jersey, Delaware, and nearby areas, with many locations recording significantly more 90-degree days than is typical by mid-July.
According to the National Weather Service in Mount Holly, several climate stations across the region have already surpassed their average number of 90-degree days through July 13, and forecasters expect those totals to increase with another stretch of hot weather this week.
Philadelphia has reached 103 degrees as its highest temperature this year and has recorded 21 days of 90 degrees or higher, well above the average of 13 by this point in the season. The city has also experienced three 100-degree days, compared with a yearly record of five set in 1988.
Elsewhere, Georgetown, Delaware, leads the region with 22 days at or above 90 degrees, while Atlantic City International Airport has recorded 19, Wilmington, Delaware, has seen 18, and Reading, Pennsylvania, has logged 16.
The hottest temperature reported among the listed climate sites so far this year is 106 degrees at Atlantic City International Airport. Several other locations, including Philadelphia, Reading, and Wilmington, have all reached 103 degrees.
The National Weather Service noted that more 90-degree days are expected over the coming days, continuing a summer trend that has already pushed many communities ahead of their historical averages.
Residents are encouraged to stay hydrated, limit strenuous outdoor activity during the hottest part of the day, and check on older adults, young children, and others who may be more vulnerable to extreme heat.
For the latest forecast and heat updates, visit weather.gov/phi.
