Gone are the 60-degree temperatures from Thursday, now replaced by high temperatures near the 32-degree mark.
The return of colder air was accompanied by a couple of inches of snow early Friday night with snowfall accumulations generally between 2 and 4 inches across the area.
As temperatures fall, a layer of ice may form underneath the snow, adding to driving and walking conditions.
The weekend will be cold around Pittsburgh with high temperatures within a few degrees of freezing.
After a break from precipitation on Saturday, another round of snow and a wintry mix is in the offing for Sunday.
The coldest air of the season so far may follow during the middle of next week.
As the death toll climbs early this week, thunderstorms will continue to disrupt rescue and recovery efforts across the Kathmandu Valley.
Severe storms pummeled parts of eastern Texas Sunday into early Monday morning with softball-sized hail, damaging winds and tornadoes.
MIlder air has moved into the Northeast and will last through midweek after a cool and cloudy start.
Bouts of heavy rain will once again visit the Southeast this week, bringing the threat of flooding and travel delays.
Practices in sustainability offer a glimpse of hope amid a severe world hunger crisis brought on by severe weather events.
Following a stretch of extreme heat and dry conditions, rain will bring cooler weather and the threat for flooding to parts of Central America this week.
Memphis, TN (1991)
15.03" of rain during April 1991 -- wettest April since 1877. The previous April record was 13.90" in 1872.
Caribou, ME (1997)
6.2" of snow.
The 28th of April, 1790, a very stormy day of snow." by Ebenser Byles, Town Clerk of Ashford.