The latest Canadian air mass will moderate over Pittsburgh and all of western Pennsylvania, western Maryland and northern West Virginia during the balance of this week.
Afternoon temperatures will rebound into the 70s Wednesday and Thursday and could touch 80 degrees on Friday.
If you are heading to PNC Park to enjoy some late-season Pirates baseball during the evenings through Wednesday, bring a jacket, sweatshirt or sweater and where long sleeves.
There is the potential for fog developing early Wednesday and Thursday mornings. Commuters who drive may want to allow some extra travel time as a result.
As slightly more humid air begins to work into the region Thursday, there is the chance of stray shower.
A better chance for showers and thunderstorms exists Friday into Saturday as a cool front moves slowly through the region. Folks heading to PNC Park Friday and Saturday may want to tout a rain poncho.
A powerful system moving out of the Rockies will bring the threat of severe weather to portions of the Plains during the first part of this week.
Fall air will erase the record warmth that has been gripping the Northeast, while chilly air is set to charge into the Midwest by week's end.
A powerful autumn storm will take shape across the central U.S. during the middle of the week, with another one set to develop at the end of the week.
Unusually high water temperatures throughout the North Pacific Ocean have brought sightings of uncommon species to the area as well as concerns from researchers about how it could affect native species.
Cool, rainy weather will continue to dampen the Minneapolis area through the week before sunshine returns for the weekend.
An intense storm system swept through much of the Southwest over the weekend, sparking a Utah bridge to crumble amid overwhelming flooding that toppled a vehicle into a nearby river.
Johnstown, PA (1993)
Light snow in the city did not accumulate but up to 3" accumulated at the airport.
Goldsboro, NC (1999)
30" of rain in September.
U.S./Quebec border (1835)
Heavy snow; Hatley, P.Q. received 10 inches. Kelkenny, NH had 6 inches.