It will continue to feel like fall through at least Friday in the Pittsburgh area.
Highs will be held to the lower 70s again on Friday as a cool, Canadian high pressure system settles into the region. Such highs are more common in late September and roughly 10 degrees lower than normal for mid-August.
The chill will persist despite plenty of sunshine.
Some residents and visitors may opt for a long-sleeved shirt or light jacket at night as temperatures dip into the 40s at night.
Temperatures will rebound into the upper 70s to start the weekend, but humidity will remain comfortably low and dry weather will persist.
The return of higher humidity and thunderstorms is expected for Sunday.
Content contributed by Andy Mussoline, Meteorologist
Tropical Depression Eight could become a tropical storm while brushing the North Carolina coast with rough surf, downpours and locally gusty thunderstorms early this week.
Following several stretches of unseasonable heat in August, September is set to yield lower temperatures across the United Kingdom.
Tropical Depression Nine developed just south of Florida on Sunday and will turn toward the northeastern Gulf Coast of the United States later this week.
Another strong tropical disturbance will move off the coast of Africa early this week and bears watching for strengthening and impact on the Caribbean and the United States during September.
Tropical Storm Lionrock is poised to make landfall in Japan on Tuesday afternoon local time with heavy rainfall, damaging winds and an inundating storm surge.
Following a stormy weekend across Germany, a period of dry and more seasonable weather is in store this week.
Houston, TX (1980)
2.23 inches of rain fell in less than 1 hour. Streets were flooded in the downtown district and a tornado touched down briefly west of Houston at Sealy, TX.
Pittsburgh, PA (1982)
39 degrees, coldest ever in August.
Anchorage, AK (1989)
A total of 9.6 inches of rain -- wettest August on record.