Summer 2011 Climate Data for Chicago and Rockford

 

 

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
800 AM CDT THU SEP 1 2011

...A LOOK BACK AT THE CLIMATE FOR SUMMER 2011 FOR CHICAGO AND
ROCKFORD...

AT CHICAGO...THE AVERAGE HIGH TEMPERATURE FOR THE SEASON WAS 83.4
DEGREES WHICH IS 1.5 DEGREES ABOVE THE 1981 TO 2010 AVERAGE. THE
AVERAGE LOW TEMPERATURE WAS 64.5 DEGREES WHICH IS 2.8 DEGREES ABOVE
THE 1981 TO 2010 AVERAGE.  OVERALL...THE AVERAGE TEMPERATURE
FOR THE SEASON WAS 74.0 DEGREES WHICH IS 2.2 DEGREES ABOVE NORMAL.

A TOTAL OF 19.08 INCHES OF PRECIPITATION WAS RECORDED DURING THIS
PAST SUMMER...WHICH IS 7.03 INCHES ABOVE NORMAL. THIS RANKS AS
BEING THE 3RD WETTEST SUMMER ON RECORD IN CHICAGO DATING BACK TO
1871. 58 PERCENT OF THIS 19.08 INCHES...OR 11.15 INCHES...WAS
RECORDED DURING THE MONTH OF JULY. THIS RANKED THE MONTH OF JULY AS
THE WETTEST ON RECORD.


AT ROCKFORD...THE AVERAGE HIGH TEMPERATURE WAS 84.3 DEGREES WHICH IS
1.6 DEGREES ABOVE NORMAL. THE AVERAGE LOW TEMPERATURE WAS 63.5
DEGREES WHICH IS 2.5 DEGREES ABOVE NORMAL.  OVERALL...THE AVERAGE
TEMPERATURE FOR THE SEASON WAS 73.9 DEGREES WHICH IS 2.1 DEGREES
ABOVE NORMAL. THE AVERAGE TEMPERATURE FOR THE SEASON MADE SUMMER OF
2011 THE 11TH WARMEST ON RECORD.

A TOTAL OF 12.51 INCHES OF PRECIPITATION WAS RECORDED DURING THIS
PAST SUMMER...WHICH WAS ONLY 0.68 INCHES BELOW NORMAL.

$$
ACS

 



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