Philadelphia, PA – Philadelphia enters a stretch of uninterrupted summer sun, with temperatures climbing toward 90 degrees by Sunday and little relief expected through early next week. Outdoor plans are set to benefit from dry, mostly clear weather, but rising heat will challenge anyone without reliable cooling by Monday and Tuesday.
According to the National Weather Service, Thursday will bring mostly sunny skies with highs near 83°F, followed by clear nights in the low to mid-60s. Sunshine continues Friday and Saturday as highs steadily rise, peaking at 86°F Saturday and reaching 90°F by Sunday. Humidity will remain manageable at first but will build as temperatures climb, creating a noticeable summer heat trend. By early next week, highs could reach 91–92°F, pushing heat safety to the forefront for Philadelphia residents, especially those in older buildings or without air conditioning.
Travelers and commuters should expect optimal road conditions but are urged to stay hydrated and avoid strenuous activity during peak afternoon heat, especially Sunday through Tuesday. Area schools and utilities should prepare for possible increased demand as the heat intensifies.
This stretch of hot, sunny weather is expected to persist through at least Wednesday, with only a slight chance of showers midweek. Updates will follow if heat advisories or storm chances increase.
Five Day Forecast for Philadelphia, PA
- Thursday: Mostly sunny, high 83°F, low 63°F.
- Friday: Sunny, high 83°F, low 62°F.
- Saturday: Sunny, high 86°F, low 64°F.
- Sunday: Sunny, high 90°F, low 69°F.
- Monday: Mostly sunny, high 91°F, low 71°F.
