National Weather Service Weather Forecast Office

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE CHICAGO IL
901 PM CDT WED JUL 8 2009 /1001 PM EDT WED JUL 8 2009/

...ANOTHER UNSEASONABLY CHILLY SUMMER DAY...

CLOUD COVER AND RAIN KEPT TEMPERATURES FROM RISING ANY HIGHER THAN
THE MID 60S AT BOTH CHICAGO AND ROCKFORD TODAY. ASSUMING THE
TEMPERATURE AT ROCKFORD DOESNT WARM ABOVE 67 PRIOR TO MIDNIGHT CST
THEN TODAY WILL ESTABLISH A NEW COLDEST HIGH ON RECORD FOR
ROCKFORD. THE PREVIOUS RECORD COLD HIGH TEMPERATURE FOR ROCKFORD
FOR JULY 8TH WAS 67 SET BACK IN 1915.

FOR CHICAGO...TODAY MARKED THE 12TH TIME SINCE JUNE 1ST (THE START
OF METEOROLOGICAL SUMMER) THAT THE HIGH TEMPERATURE HAS FAILED TO
REACH 70 DEGREES. SINCE THE OFFICIAL OBSERVATION STATION WAS MOVED
AWAY FROM LAKE MICHIGAN BACK IN 1942...NEVER HAS THERE BEEN A
GREATER NUMBER OF DAYS WITH HIGH TEMPS BELOW 70 DEGREES UP TO THIS
POINT IN METEOROLOGICAL SUMMER. THE ONLY OTHER METEOROLOGICAL
SUMMER WITH THIS MANY DAYS WITH HIGH TEMPERATURES BELOW 70 UP TO
THIS POINT WAS BACK IN 1969.

IN ADDITION...JULY HAS GOTTEN OFF TO AN UNSEASONABLY CHILLY START.
THE AVERAGE TEMPERATURE THUS FAR THIS MONTH HAS BEEN 66.9
DEGREES...WHICH MAKES IT THE 4TH COLDEST FIRST 8 DAYS OF JULY
SINCE 1942 IN CHICAGO. HERE ARE THE 5 COLDEST STARTS TO JULY IN
CHICAGO SINCE THE OFFICIAL STATION WAS MOVED AWAY FROM THE LAKE...

   AVG
   TEMP  YEAR
1) 65.7  1984
2) 66.5  1972
3) 66.8  1967
4) 66.9  2009
5) 67.6  1979

FOR ROCKFORD...TODAY MARKED THE 7TH TIME THAT THE HIGH TEMPERATURE
FAILED TO REACH 70 DEGREES SINCE JUNE 1ST. SINCE RECORDS BEGAN BACK
IN 1893 THERE HAVE ONLY BEEN 2 OTHER SUMMERS THAT HAVE HAD MORE
DAYS WITH HIGH TEMPERATURES BELOW 70 DEGREES UP TO THIS POINT IN
THE SUMMER. THE MOST WAS BACK IN 1969 WITH 13 DAYS BELOW 70
DEGREES AND THE OTHER WAS BACK IN 1912 WHEN THERE WERE 8 DAYS WHEN
THE MERCURY NEVER REACHED 70. THERE HAVE BEEN MULTIPLE OTHER YEARS
WITH 7 DAYS WITH HIGHS BELOW 70 UP TO THIS POINT IN THE
METEOROLOGICAL SUMMER...INCLUDING MOST RECENTLY IN 2001 AND 1998.

ALSO...THIS IS NOW THE 5TH COLDEST START TO THE MONTH OF JULY EVER
FOR ROCKFORD. THE AVERAGE TEMPERATURE THE FIRST 8 DAYS OF THE
MONTH HAS BEEN 65.2 DEGREES. HERE ARE THE TOP 5 COLDEST STARTS TO
JULY DATING BACK TO 1893...

   AVG
   TEMP  YEAR
1) 62.3  1967
2) 64.6  1972
3) 64.6  1924
4) 65.1  1915
5) 65.2  2009

IZZI