AccuWeather: Cloudier end to the weekend for the Philadelphia region

PHILADELPHIA (WPVI) -- An Extreme Heat Watch begins midweek and continues through the Fourth of July, with highs in the upper-90s to near 100 degrees.

SUNDAY: Some patchy fog early. Clouds, limited sun. It stays muggy with a pop-up shower or storm around, high 83.

TONIGHT: Patchy fog redevelops. Partly cloudy and muggy. Low 68.

MONDAY: Hazy sun, patchy clouds. High 89. Tolerable humidity.

TUESDAY: Clouds mix with sunshine, high 92.

WEDNESDAY: A steamy start to July. It's hot and humid, high 98. An Extreme Heat Watch begins with heat index values between 105-110 degrees.

THURSDAY: Another very hot day with humidity still elevated, high 100. The Extreme Heat Watch continues, heat index values will be over 100 degrees again.

FRIDAY: High heat and humidity, high 99. Heat index values will be over 100 degrees. A pop-up thunderstorm can't be ruled out. The Extreme Heat Watch continues, heat index values will be over 100 degrees again.

SATURDAY (4TH OF JULY): Hot and humid with the threat for thunderstorms later in the day, high 97. The Extreme Heat Watch continues, heat index values will be over 100 degrees again.