AccuWeather: Hottest day in 15 years today in the Philadelphia region

PHILADELPHIA (WPVI) -- The high in Philadelphia tied a record of 103 degrees today. Record challenging heat continues through the Fourth of July.

TONIGHT: Very warm and humid, low 83.

FRIDAY: High heat and humidity, high 103. Heat index values once again between 105-112 degrees or even higher. An isolated thunderstorm could be strong to severe.

SATURDAY (4TH OF JULY): Hot and humid with the threat for thunderstorms later in the day that could be severe with downpours and damaging winds, high 100. The Extreme Heat Warning continues through 8pm with heat indices likely near 105 degrees.

SUNDAY: Clouds, some sun with the threat of late-day storms, high 93.

MONDAY: Another day that could be unsettled with scattered showers and thunderstorms, high 85.

TUESDAY: Mostly cloudy, high 84.

WEDNESDAY: Clouds, some sun and not as humid, high 85.

THURSDAY: Partly sunny and seasonable, high 88.