The official temperature at Philadelphia Internation Airport shot up to 88 this afternoon, one-upping the erstwhile record-holder for the date, 87, in 1922.
Changes, however, are very definitely in the wind, and they may be evident at the ballpark tonight as the Phillies host the Mets.
The Storm Prediction Center, in Oklahoma, has placed the region under a "slight risk" for severe storms this evening, so consider a flying hot-dog wrapper advisory in effect.
The best guess now is that a line of storms would reach the Philadelphia region around 8 or so.
Tomorrow afternoon temperatures will be about 20 degrees cooler than today's, and showers are expected to become more numerous Thursday night into Friday.
No more prematurely summery weather is in the forecast through the middle of next week.