Climatological Report (Monthly)
Issued by NWS

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CXUS53 KLOT 011401
CLMPWK


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
858 AM CDT SUN OCT 1 2017

...................................

...THE CHICAGO EXECUTIVE CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1996 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              96   09/22/2017
                        09/10/2013
                        07/04/2012
 LOW               34   09/24/2012
HIGHEST            96R  09/22        MM      MM       93
LOWEST             47   09/10        MM      MM       50
AVG. MAXIMUM     79.4              74.3     5.1     77.1
AVG. MINIMUM     57.2              54.3     2.9     60.4
MEAN             68.3              64.3     4.0     68.7

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         9.43   2008
 MINIMUM         0.31   2004
TOTALS           0.53              3.21   -2.68     1.36

DEGREE_DAYS
HEATING TOTAL      58               102     -44       21
 SINCE 7/1         64               112     -48       23
COOLING TOTAL     162                81      81      137
 SINCE 1/1        797               778      19     1050
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              5.8
HIGHEST WIND SPEED/DIRECTION    22/170    DATE  09/20
HIGHEST GUST SPEED/DIRECTION    28/280    DATE  09/04

AVERAGE RH (PERCENT)     68


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$


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