A push of cooler and less humid air has settled over Pittsburgh, western Pennsylvania and northern West Virginia, but watch for morning fog.
Several days of bright sunshine are in store.
The push of Canadian air has ended the daily risk of showers and thunderstorms experienced during the holiday weekend.
Many people will be able to turn off the fans and air conditioners with temperatures in urban areas dropping well down into the 50s at night.
Many rural will have night time temperatures dipping into the 40s.
Each day through Friday will bring a good deal of bright sunshine with highs generally in the 70s.
The only potential, weather-related travel problem would be patchy early-morning fog for long-distance commuters over the rivers, especially each morning Wednesday through Friday. Some major highways that could be impacted by fog include the Turnpike, I-68, I-79 and routes 22, 28, and 30.
It was a rather active past few days with tornadoes, flash flooding, and damaging winds targeting many communities.
A tropical wave west of the Cape Verde Islands looks like it could be the next named tropical storm in the Atlantic Basin.
One person is dead, and another remains critically injured after a lightning strike in Southern California.
Cooler-than-normal temperatures are in store for Chicago this week.
Relief is on the way for portions of the Plains that are in the grips of the ongoing drought.
Big Delta, AK (1992)
A rare tornado touched down; first since 1979 in Alaska.
Albuquerque, NM (1997)
A propane truck blew up after being struck by lightning. 3 people were injured.
Pittsburgh, PA (1999)