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TODAY: The humidity rises today on a southerly flow ahead of a distant front. We see a mix of clouds and sun. A stray thunderstorm is possible well north and west of the city. The high is 89.
TONIGHT: It's warm and sticky overnight with partly cloudy skies and lows in the low 70s.
WEDNESDAY: The heat is on and so is the humidity. Look for a clouds-and-sun mix, some late-day and nighttime showers and thunderstorms, some of which could be strong, and a humid high of 93. The heat index in Philadelphia could be near 100.
THURSDAY: An approaching cold front pushes through quickly. Morning showers and perhaps a thunderstorm give way to afternoon drying and clearing. Humidity should also drop during the afternoon. The high is 82.
FRIDAY: What a wonderful way to end the work week! We see plenty of sunshine, low humidity and a nice high of 84. It should be a great evening at the Union and Phillies games.
SATURDAY: It's another mostly sunny day with a slightly warmer high of 88.
SUNDAY: Sunshine will mix with a few more clouds and late in the day, a thunderstorm may pop up in a couple spots. The high: 87.
MONDAY: Clouds mix with occasional sunshine, and showers and thunderstorms are possible. A heavy storm can't be ruled out. The high is 83.
TUESDAY: A clouds-and-sun mix appears likely, with another round of thunderstorms. The high: 85.