Three-Month Temperature Outlook
Issued: September 2014

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

 		OND		NDJ		DJF		JFM		FMA		MAM		AMJ		MJJ		JJA		JAS		ASO		SON		OND		
Median		40.4		31.0		26.7		30.0		38.4		48.7		59.0		67.4		71.8		70.4		63.2		52.6		40.2		
99%		46.8/34.0	39.2/22.8	35.5/17.9	37.7/22.3	44.6/32.2	54.9/42.5	63.9/54.1	72.6/62.2	77.5/66.1	75.0/65.8	67.6/58.8	57.2/48.0	46.6/33.8