Climatological Report (Daily)
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000
CDUS43 KLOT 160635
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1234 AM CST TUE DEC 16 2014


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 15 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         46    145 PM  64    1971  35     11       22
  MINIMUM         42   1159 PM -12    1901  21     21       10
  AVERAGE         44                        28     16       16

PRECIPITATION (IN)
  YESTERDAY        0.06          1.10 1971   0.07  -0.01      T
  MONTH TO DATE    0.26                      1.26  -1.00     0.64
  SINCE DEC 1      0.26                      1.26  -1.00     0.64
  SINCE JAN 1     38.94                     35.90   3.04    40.79

SNOWFALL (IN)
  YESTERDAY        0.0           8.0  1987   0.3   -0.3      0.2
  MONTH TO DATE    T                         3.5   -3.5      8.4
  SINCE DEC 1      T                         3.5   -3.5      8.4
  SINCE JUL 1      2.9                       4.9   -2.0      9.3
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       21                        37    -16       49
  MONTH TO DATE  475                       526    -51      621
  SINCE DEC 1    475                       526    -51      621
  SINCE JUL 1   1918                      1782    136     1904

 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    17   HIGHEST WIND DIRECTION    SE (140)
  HIGHEST GUST SPEED    24   HIGHEST GUST DIRECTION    SE (130)
  AVERAGE WIND SPEED    11.4


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          1200 AM
 LOWEST     86           100 PM
 AVERAGE    93

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   34        60      1984
 MINIMUM TEMPERATURE (F)   20       -12      1951


SUNRISE AND SUNSET
DECEMBER 16 2014......SUNRISE   713 AM CST   SUNSET   421 PM CST
DECEMBER 17 2014......SUNRISE   714 AM CST   SUNSET   422 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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