Climatological Report (Monthly)
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CXUS43 KLOT 011245
CLMDPA


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
628 AM CST SUN JAN 1 2017

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

...THE DU PAGE  AIRPORT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1997 TO 2016

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              69   12/03/2012
 LOW              -15   12/19/2016
HIGHEST            51   12/26        MM      MM       61
LOWEST            -15R  12/19        MM      MM       14
AVG. MAXIMUM     30.4              35.2    -4.8     44.1
AVG. MINIMUM     17.2              19.1    -1.9     32.6
MEAN             23.8              27.2    -3.4     38.4

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         5.10   2015
 MINIMUM         0.58   2014
TOTALS           1.14              1.72   -0.58     5.10

DEGREE_DAYS
HEATING TOTAL    1268              1173      95      818
 SINCE 7/1       2179              2427    -248     1895
COOLING TOTAL       0                 0       0        0
 SINCE 1/1       1007               814     193      711
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              10.8
HIGHEST WIND SPEED/DIRECTION    31/270    DATE  12/26
HIGHEST GUST SPEED/DIRECTION    41/270    DATE  12/26

AVERAGE RH (PERCENT)     74


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

$$



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