Climatological Report (Monthly)
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CXUS43 KLOT 011323
CLMDPA


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
712 AM CST THU JAN 1 2015

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

...THE DU PAGE  AIRPORT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1997 TO 2014

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH             100   12/25/2031
 LOW              -24   12/31/1999
HIGHEST            50   12/26        MM      MM       55
LOWEST              3   12/31        MM      MM      -10
AVG. MAXIMUM     36.9              35.2     1.7     30.0
AVG. MINIMUM     25.4              19.1     6.3     12.5
MEAN             31.1              27.2     3.9     21.3

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         4.16   2008
 MINIMUM         0.58   2014
TOTALS           0.58R             1.72   -1.14     0.91

DEGREE_DAYS
HEATING TOTAL    1042              1173    -131     1350
 SINCE 7/1       2501              2427      74     2786
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        767               814     -47      745
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              9.0
HIGHEST WIND SPEED/DIRECTION    30/270    DATE  12/27
HIGHEST GUST SPEED/DIRECTION    37/270    DATE  12/27

AVERAGE RH (PERCENT)     77


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

$$



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