After a period of dry air, showers and thunderstorms will survive the trip into Harrisburg, Pennsylvania, from the Midwest.
There is a risk of downpours heavy enough to cause flash and urban flooding into Thursday night.
The amount of shower and thunderstorm activity may diminish locally Friday into Saturday but is likely to continue south and west of the region.
Temperatures are forecast to remain near or slightly below average through the weekend. Temperatures typically range from a low of 64 to a high of 83 F.
During next week, there are signs of some hot weather for a few days, especially during the second half of the week. Temperatures may top 90 degrees.
AccuWeather will also be watching for an uptick in tropical activity during the last part of August. September is typically the most active month in terms of tropical storms and hurricanes in the Atlantic Basin.
A brief warmup is in store for the Pittsburgh area this weekend before cooler weather makes a return for the start of the new week.
A brief warmup is in store for the Cleveland area this weekend before cooler weather makes a return for the start of the new week.
Sunny skies will continue to bathe the Los Angeles area.
Sunny skies will bathe the Bay Area for the new week.
Well-above normal temperatures will highlight the weekend in Seattle.
Off-and-on showers and thunderstorms will be in the picture for the coming week in Dallas.
Centre County, PA (1792)
Quote from the diary of William Colbert, a Methodist Circuit Rider up in Centre County: "A very cold morning. It was surprising to see so much snow on the ground at this season of the year. The limbs of the peach trees broke, and large limbs of the oaks broke down, and saplings bent across the road. It began to snow last night before we went to bed. I came out of my way by Lamb's to Phillip Antes."
A total of 9 inches of rain in 6 hours causes flooding on Sugar Creek.
Central U.S. (1991)
Very early cold snap..... Location Temp Record Peoria, Ill. 32 33/1918 Burlington, Iowa 32 35/1918 Chicago, Ill. 36 38/1956 Indianapolis, Ind. 36 37/1956 Waterloo, Iowa 27 31/1971