Oc­to­ber will close mild af­ter a long cool spell

Post Tribune (Sunday) - - Classifieds -

(Pre­cip­i­ta­tion at 7 a.m. CDT)

Since Oct. 10, much of the Great Lakes and Mid­west have felt the ef­fect of per­sis­tently cool air. Of­fi­cially, at O’Hare In­ter­na­tional Air­port, the av­er­age tem­per­a­ture over the past three weeks has run 6.5 de­grees be­low nor­mal.

Only two days posted a slight tem­per­a­ture sur­plus.

Dur­ing this pe­riod, there has been only one day that eclipsed 60 de­grees. Cur­rently, the fewest 60-de­gree days dur­ing the last three weeks of Oc­to­ber stands at two, set in 1925.

Strong south-to-south­west winds on Tues­day will draw mild air across the Chicago area. It’s highly likely that read­ings will rise into the 60s. The mild air will be short-lived. Rain is ex­pected to ac­com­pany a cold front across the metro area Tues­day evening, herald­ing a new push of cool air. Day­time read­ings on Hal­loween are ex­pected to set­tle back into the 50s.

NA­TIONAL FORE­CAST

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