CHICAGO (CBS) — The Cubs are at home Wednesday night, and if you’re going to the game, you had best not forget your jacket.

The summerlike temperatures from Tuesday are long-gone, and for the game against the Philadelphia Phillies, at 7:05 p.m., the temperature will only be in the middle 50s as a breeze blows over the cooler waters of Lake Michigan.

As of 11:20 a.m., the temperature was 57 in Kenosha, 58 in Waukegan, Evanston and Gary, Ind., and 59 in LaPorte, Ind. But away from the lake shore, the temperature climbed to 71 in Peru and 69 in Kankakee.

But for most of the area, high pressure has moved in and cool air has settled. The forecast high for the day is 65.

But don’t be expecting that cooling trend to last.

CBS 2 Meteorologist Mary Kay Kleist says the high pressure is already on its way out, and a warm wind will return as temperatures return to summertime highs just in time for the weekend

The high for Thursday is 72, for Friday 82, for Saturday 84, for Sunday 85, for Monday 75, and for Tuesday 68.