10:15 AM | *Hottest day of the week likely on Thursday in the Mid-Atlantic region…may be followed by some heavy rainfall from Friday into Saturday* — Arcfield Weather

Peak of the heat comes on Thursday

The first day of the work week featured below-normal temperatures in much of the Mid-Atlantic region; especially, in eastern PA, New Jersey, and southeastern NY where stubborn clouds held on through the day and a low-level easterly flow of air developed.  Temperatures today will be noticeably warmer with the return of sunshine and they’ll stay on the warm side at mid-week as high pressure heads towards the east coast.

By Thursday, with the high shifting to a position off the coast, broad southwesterly flow will funnel hot and humid air into the Mid-Atlantic region from the central states and Midwest. Temperatures on Thursday afternoon are likely to reach their peak for the week climbing to the middle and upper 90’s in the DC-to-Philly-to-NYC corridor…maybe even a flirtation with the 100 degree mark in some spots. In addition to the heat, dew point temperatures will climb into the upper 60’s/lower 70’s indicative of high humidity making for quite uncomfortable conditions and heat indices above 100 degrees.