Climatological Report (Daily)
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000
CDUS43 KLOT 150638
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1238 AM CST MON DEC 15 2014


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 14 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2014


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         50    316 PM  66    1975  35     15       31
  MINIMUM         45   1159 PM  -9    1901  21     24       22
  AVERAGE         48                        28     20       27

PRECIPITATION (IN)
  YESTERDAY        T             1.43 2011   0.07  -0.07     0.23
  MONTH TO DATE    0.20                      1.19  -0.99     0.64
  SINCE DEC 1      0.20                      1.19  -0.99     0.64
  SINCE JAN 1     38.88                     35.83   3.05    40.79

SNOWFALL (IN)
  YESTERDAY        0.0          10.0  1951   0.3   -0.3      4.0
  MONTH TO DATE    T                         3.2   -3.2      8.2
  SINCE DEC 1      T                         3.2   -3.2      8.2
  SINCE JUL 1      2.9                       4.6   -1.7      9.1
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       17                        37    -20       38
  MONTH TO DATE  454                       489    -35      572
  SINCE DEC 1    454                       489    -35      572
  SINCE JUL 1   1897                      1745    152     1855

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1    799                       843    -44      933
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION     S (180)
  HIGHEST GUST SPEED    19   HIGHEST GUST DIRECTION     S (180)
  AVERAGE WIND SPEED     8.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           800 PM
 LOWEST     86          1200 AM
 AVERAGE    93

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   35        64      1971
 MINIMUM TEMPERATURE (F)   21       -12      1901


SUNRISE AND SUNSET
DECEMBER 15 2014......SUNRISE   712 AM CST   SUNSET   421 PM CST
DECEMBER 16 2014......SUNRISE   713 AM CST   SUNSET   421 PM CST


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




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