Warm and sunny Monday in Philadelphia area, tracking midweek storms. Here's the weather forecast.

Summer certainly ended on a fantastic note with plenty of sunshine Sunday and high temperatures in the mid-upper 70s in the Philadelphia area.

Conditions will remain mostly clear to partly cloudy to start off Monday morning with temperatures from the middle 50s to even the upper 40s into the Lehigh Valley. The cool feel of fall will not last long, however, with plenty of sunshine on the way and a shift in the winds to the south.

Fall officially arrives at 2:19 p.m. on Monday, but it won't feel very fall-like through the afternoon. After the cool start, we warm quickly to near 80 degrees under those mostly sunny skies.

On Tuesday, the first full day of fall summer-like conditions return as temperatures turn up even more with highs in the mid-80s.

A cold front, however, approaching from