Three-Month Temperature Outlook
Issued: August 2017

CHICAGO OHARE INTL AP, IL
COOK County, Coop ID: 111549 Elevation: 658 ft. Latitude: 41° 59' N Longitude: 87° 56' W

Temperature Range for 99% Confidence Interval

 		SON		OND		NDJ		DJF		JFM		FMA		MAM		AMJ		MJJ		JJA		JAS		ASO		SON		
Median		52.8		40.7		30.9		26.5		29.9		38.4		48.7		59.1		67.6		71.8		70.4		63.2		52.7		
99%		57.4/48.2	47.1/34.3	39.1/22.7	35.3/17.7	37.6/22.2	44.6/32.2	54.9/42.5	64.0/54.2	72.8/62.4	77.5/66.1	75.0/65.8	67.6/58.8	57.3/48.1