Colder air will return in stages for Pittsburgh with the first not due in until Tuesday night or Wednesday.
Before that, temperatures will rise into the 40s both Monday and Tuesday. There is a chance of rain Monday afternoon into Tuesday.
As it turns colder Wednesday, there will be chances for snow or snow showers Wednesday and Friday. Highs will drop back into the low 30s.
The weekend will start out with limited sun on Saturday with a high in the mid-20s.
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Much cooler air with temperatures more typical of mid- to late September will sweep across the Great Lakes and Northeast into next week.
Much of the southern United States dealing with the aftermath of Cindy will get a break from hot, humid and stormy conditions by the end of the weekend.
This weekend’s taste of September across the north-central United States will give way to a resurgence of heat, steamy air and severe weather by midweek.
The recent April-like rainy stretch of weather will quickly get erased by a resurgence of sizzling heat in northeastern China this week.
A welcome period of more seasonable conditions will grace Germany this weekend before the risk of stronger thunderstorms returns around the middle of next week.
Cooler air will continue to pour across the United Kingdom this weekend, providing relief from the longest June heat wave in more than 40 years.
Tropical Storm Dora in the eastern Pacific Basin threatens to increase downpours along Mexico's southern coast into Monday.