Monday in the Philadelphia region will be a touch warmer, with any early fog burning off quickly, leaving us with plenty of sun and highs in the mid to upper 80s. A few spots along the I-95 corridor will hit 90 degrees.

That warm-up keeps going Monday night into Tuesday as hotter air moves in ahead of a cold front. Tuesday will be hot but not extreme — upper 80s to low 90s for most, cooler near the coast. Humidity will be noticeable, but heat index values should stay just shy of advisory levels. Wednesday looks about the same, and we could see a couple of pop-up storms in the afternoon, but most areas will stay dry.

Monday in the Philadelphia region will be a touch warmer with plenty of sun and highs in the mid to upper 80s. CBS News Philadelphia

By Thursday, a weak cold front slips i

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