The summerlike warmth basking Harrisburg will slip away by midweek as cooler air makes a comeback.
Another very warm day will unfold on Tuesday ahead of an approaching backdoor cold front, which is a front that advances from the northeast.
Temperatures will rise into the middle and upper 80s, falling just short of Tuesday's record high of 90 F from 1944. It will remain sticky, setting the stage for the front to trigger showers and thunderstorms.
In the wake of the front, shorts and sunglasses will likely be replaced with spring jackets and umbrellas on Wednesday.
Wednesday is shaping up to be a damp and cooler day with a few spotty showers. Temperatures will still reach the middle 70s.
A slight rebound in temperature will occur Thursday ahead of a front from the Midwest heightening concerns for late-week heavy rain.
The front, combined with embedded tropical moisture, will bring the risk of flooding downpours on Friday.
Fresh cool air following the front and a slow-moving storm system set to take shape over the Northeast or just offshore will prevent a repeat of the summerlike warmth next weekend or early the following week.
Rounds of drenching showers and heavy thunderstorms will heighten the risk of flash flooding across the northeastern United States through the final weekend of July.
Tropical Storm Nida threatens to bring flooding rain to the Philippines into this weekend with future impacts on China and Taiwan.
Additional downpours are likely to roll across northern New Jersey and further suspend play during the late rounds at the 98th PGA Championship at Baltusrol Golf Club this weekend.
As several large fires continue to rage across the western United States, weather conditions will gradually improve for firefighting efforts in the upcoming week.
A tropical wave approaching the Caribbean Sea will attempt to reactivate the Atlantic Basin during the first week of August.
A hot air balloon carrying at least 16 people crashed in central Texas on Saturday morning. Authorities say there appears to be no survivors.