Three-Month Temperature Outlook
Issued: May 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

 		JJA		JAS		ASO		SON		OND		NDJ		DJF		JFM		FMA		MAM		AMJ		MJJ		JJA		
Median		71.9		70.5		63.4		52.8		40.7		31.2		27.2		30.2		38.5		48.7		59.1		67.5		71.9		
99%		77.6/66.2	75.1/65.9	67.8/59.0	57.4/48.2	47.1/34.3	39.4/23.0	36.0/18.4	37.9/22.5	44.7/32.3	54.9/42.5	64.0/54.2	72.7/62.3	77.6/66.2