AccuWeather: Heat index approaches 90° tomorrow for the Philadelphia region

PHILADELPHIA (WPVI) -- The peak of rising humidity is on Thursday and that helps to ignite the threat of a few thunderstorms.

TONIGHT: Moonlit skies. Low 60.

WEDNESDAY: Feeling more like mid-July. Mostly sunny with a bit higher humidity. High 87.

THURSDAY: A cold front approaches and brings a few afternoon showers and thunderstorms. Anyone could be gusty with some potentially strong winds. High 86.

FRIDAY: It's a bit less humid behind the cold front. Temperatures remain above normal with sun and clouds, high 85.

SATURDAY: It's mostly cloudy with a shower chance in the morning, high 79.

SUNDAY: Partly sunny with shower chances. high 84.

MONDAY (MEMORIAL DAY): Variable clouds, shower chance. High 78.

TUESDAY: A shower possible. Still on the cloudier side. High 80.