CHICAGO (CBS) — In a Chicago summer that’s broken all kinds of heat records, another one has fallen.

The National Weather Service maintains a buoy in the middle of the southern end of Lake Michigan, about 60 miles offshore.

Senior meteorologist Gino Izzi says it records the air temperature over the lake.

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“On July 26, right after we got up to around 100 degrees that day, the temperature over the lake actually climbed to 85.1 degrees, which was the highest reading ever recorded in that buoy, dating back to 1981,” Izzi said.

Izzi says it’s a reflection of just what an unusual summer this is.

“It just confirms everything that we’ve seen so far which shows record-breaking heat across the nation and a record warm summer and even a record warm year across the area,” Izzi said.

Izzi says the computer models don’t show any new wave of unrelenting heat for the first couple of weeks of August.

However, the month should still be above-average when it comes to hot, dry weather.