Climatological Report (Monthly)
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CXUS43 KLOT 011135
CLMDPA


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
628 AM CDT FRI SEP 1 2017

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

...THE DU PAGE  AIRPORT CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1997 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              97   08/02/2006
 LOW               43   08/31/2009
HIGHEST            89   08/16        MM      MM       92
LOWEST             46   08/25        MM      MM       51
AVG. MAXIMUM     79.4              82.5    -3.1     84.2
AVG. MINIMUM     57.4              61.4    -4.0     64.9
MEAN             68.4              72.0    -3.6     74.5

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         6.19   2002
 MINIMUM         1.33   2003
TOTALS           1.92              4.60   -2.68     3.12

DEGREE_DAYS
HEATING TOTAL      11                 7       4        0
 SINCE 7/1         12                 9       3        1
COOLING TOTAL     126               222     -96      303
 SINCE 1/1        550               724    -174      846
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              6.4
HIGHEST WIND SPEED/DIRECTION    26/250    DATE  08/03
HIGHEST GUST SPEED/DIRECTION    37/230    DATE  08/17

AVERAGE RH (PERCENT)     75


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

$$



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