More 90s in the coming week than all of last August
Six of the next 7 days will see 90s over at least sections of the metro area, more than the two 90s which occurred here all of last August. It’s a period predicted to include several daytime highs likely to tie or exceed Chicago’s highest 2007 temperature to date—94° recorded on July 8 and 9. Light easterly lake breezes blow for a sixth day Tuesday. But with Lake Michigan’s temperature at 77°—the year’s highest—the cooling impact of these winds is a fraction of just a month or two ago. Monday’s lake breeze restricted Loop highs to 83° while O’Hare topped out at 89°—the warmest in the three weeks since July 9.
August 2007 gets underway at the stroke of midnight Tuesday night. The month is home to 25% of the city’s 90°highs. Since weather observations began at Midway Airport in 1928, Augusts have hosted an average of six 90s.
--By Tom Skilling, WGN-TV Chief Meteorologist