Philadelphia, PA – Sunny skies and calm winds will make Sunday one of the most comfortable summer days left in August, with highs near 89°F and low humidity. Outdoor plans from Center City to the Main Line should be uninterrupted by rain, giving residents a welcome chance to enjoy open-air dining, community events, or time in the parks.
According to the National Weather Service, winds will remain light from the south through the day, shifting to calm conditions by evening as temperatures drop into the mid-60s. Monday marks the start of a warmer stretch, with highs near 90°F and mostly clear nights keeping conditions mild but more humid.
The heat will peak midweek, with highs of 91°F Wednesday and a 40% chance of afternoon showers. While most of the early week will stay dry, the midweek storm chance could affect commutes and outdoor activities, especially in areas west of the city along I-76 and US-1.
Residents are advised to stay hydrated and limit strenuous activities during the warmest hours Monday through Wednesday. Conditions trend drier again by Thursday with highs near 91°F.
Five Day Philadelphia, PA Forecast
- Sunday: Sunny and warm. High 89°F, low 65°F
- Monday: Sunny, hotter afternoon. High 90°F, low 66°F
- Tuesday: Sunny and hot. High 90°F, low 71°F
- Wednesday: Mostly sunny, chance of showers after 2 p.m. High 91°F, low 73°F
- Thursday: Mostly sunny and hot. High 91°F, low 73°F
