Climatological Report (Daily)
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CDUS43 KLOT 162241
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
439 PM CST TUE DEC 16 2014


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR DECEMBER 16 2014...
VALID TODAY AS OF 0400 PM LOCAL TIME.

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)
 TODAY
  MAXIMUM         45   1208 PM  60    1984  34     11       21
  MINIMUM         36    359 PM -12    1951  20     16        7
  AVERAGE         41                        27     14       14

PRECIPITATION (IN)
  TODAY            0.02          1.67 1921   0.07  -0.05     0.05
  MONTH TO DATE    0.28                      1.33  -1.05     0.69
  SINCE DEC 1      0.28                      1.33  -1.05     0.69
  SINCE JAN 1     38.96                     35.97   2.99    40.84

SNOWFALL (IN)
  TODAY            0.0           4.8  2008   0.3   -0.3      0.7
  MONTH TO DATE    T                         3.8   -3.8      9.1
  SINCE DEC 1      T                         3.8   -3.8      9.1
  SINCE JUL 1      2.9                       5.2   -2.3     10.0

DEGREE DAYS
 HEATING
  TODAY           24                        38    -14       51
  MONTH TO DATE  499                       564    -65      672
  SINCE DEC 1    499                       564    -65      672
  SINCE JUL 1   1942                      1820    122     1955

 COOLING
  TODAY            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    24   HIGHEST WIND DIRECTION    NW (300)
  HIGHEST GUST SPEED    31   HIGHEST GUST DIRECTION    NW (310)
  AVERAGE WIND SPEED     8.4


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  LIGHT RAIN
  FOG
  FOG W/VISIBILITY <= 1/4 MILE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           200 AM
 LOWEST     82           400 PM
 AVERAGE    91

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   34        60      1977
 MINIMUM TEMPERATURE (F)   20        -7      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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