Climatological Report (Monthly)
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000
CXUS43 KLOT 011211
CLMDPA


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
643 AM CDT FRI MAY 1 2015

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

...THE DU PAGE  AIRPORT CLIMATE SUMMARY FOR THE MONTH OF APRIL 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1997 TO 2015

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              88   04/18/2002
 LOW               18   04/03/2013
HIGHEST            78   04/17                         80
LOWEST             24   04/04                         23
AVG. MAXIMUM     61.7              60.9     0.8     59.9
AVG. MINIMUM     36.6              37.7    -1.1     35.8
MEAN             49.2              49.3    -0.1     47.9

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         6.50   1999
 MINIMUM         1.27   2004
TOTALS           4.24              3.35    0.89     2.08

DEGREE_DAYS
HEATING TOTAL     468               475      -7      507
 SINCE 7/1       6601              6066     535     7373
COOLING TOTAL       0                 4      -4        0
 SINCE 1/1          0                 4      -4        0
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              10.3
HIGHEST WIND SPEED/DIRECTION    40/270    DATE  04/21
HIGHEST GUST SPEED/DIRECTION    51/280    DATE  04/21

AVERAGE RH (PERCENT)     62


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

$$




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