The temperature at O'Hare International Airport hit 91 at 1:10 p.m. and climbed to 92 later in the afternoon Monday, beating a record high temperature for a sixth day in a row as the late September heat wave marched on.
The previous record high for Sept. 25 was 90 degrees, set in 1933.
"This is the latest stretch of six consecutive 90-degree days on record in Chicago," the National Weather Service said in a statement. “There has never been a heat wave of this duration and magnitude this late in the season in Chicago."
It was also the sixth day in a row that temperatures got to 92 degrees. In the last 50 years, the only other times there were stretches of weather with temperatures at or above 92 degrees, it was in the middle of summer in 1988 and 2012, according to the weather service.
Chicago hit a record high temperature for the fifth day in a row Sunday as the thermometer rose to 93 degrees, beating the old record of 91 set in 1891, according to the National Weather Service.
O’Hare hit 92 a little before 2:20 p.m. Sunday, and temperatures continued to rise until hitting 93 at 2:57 p.m., according to the weather service.
The string of 90-degree-plus days that began Wednesday also is the latest Chicago has ever seen temperatures above 90 degrees for five days in a row, according to the weather service. Previously, the period of Sept. 15-19, 1955, held the record for the latest stretch of five days with the temperature above 90 degrees.
“There has never been a heat wave of this duration and magnitude this late in the season in Chicago,” the weather service said in a statement about the heat wave.
Saturday’s high of 95 degrees beat the previous record high of 91 set in 1937. It also tied the hottest day of the year, and was the latest in the year the city’s ever seen its record high temperature. Saturday’s low temperature of 72 degrees was also the highest low temperature Chicago’s ever seen on Sept. 23.