Three-Month Temperature Outlook
Issued: December 2016

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

 		JFM		FMA		MAM		AMJ		MJJ		JJA		JAS		ASO		SON		OND		NDJ		DJF		JFM		
Median		29.9		38.4		48.7		59.2		67.6		72.1		70.6		63.4		52.8		40.6		31.1		27.1		29.9		
99%		37.6/22.2	44.6/32.2	54.9/42.5	64.1/54.3	72.8/62.4	77.8/66.4	75.2/66.0	67.8/59.0	57.4/48.2	47.0/34.2	39.3/22.9	35.9/18.3	37.6/22.2