More summer-like conditions will return to the Philadelphia area for a brief time before a front pushes through the region during the latter part of the weekend.
The high temperature on Sunday will climb into the upper 80s with an increase in humidity.
"However, the warmer and more humid air will provide fuel for thunderstorms, which can be strong Sunday into Sunday night," AccuWeather Meteorologist Mike Doll said.
One of those storms may be disruptive to the end of the Philadelphia Phillies' current home stand Sunday afternoon (1:35 p.m. EDT scheduled start) against the Arizona Diamondbacks at Citizens Bank Park.
The higher humidity will stick around into Monday before exiting the region on Tuesday.
Sunshine will be the rule into the middle part of the week, with daytime highs in the low 80s and overnight lows in the mid-60s.
A budding tropical disturbance has the potential to strengthen significantly and reach Florida with strong winds, coastal flooding and torrential rainfall during Sunday and Monday.
Rounds of showers and thunderstorms will bring the potential for flash flooding and localized damaging wind gusts through Thursday.
Stargazers will want to dig out their binoculars and telescopes this weekend as Venus and Jupiter shine so close that they appear as one large, bright star in the evening sky.
One final surge of heat will encompass much of England and Wales from Tuesday through Thursday.
A teenager is alive and recovering after contracting a rare brain-eating amoeba in Florida, hospital officials said.
North Dakota (1991)
Huge hail caused severe damage in eastern North Dakota. Some hail was as large as six inches in diameter. Holes were punched in roofs and 16,000 acres of crops were destroyed.
The remains of Typhoon Holly brought heavy rains and flooding to south-central Alaska with heavy snow inland. (4-foot drifts at Denali National Park).
Hampton Roads, VA (1990)
Very heavy rain fell during the morning, causing widespread flooding. There was also 7.33 inches of rain at Virginia Beach. Between 4 and 5 inches of rain fell at Hampton Roads.