Climatological Report (Daily)
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CDUS43 KLOT 270639
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1239 AM CST TUE DEC 27 2016


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 26 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2016


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         54    357 AM  55    1971  32     22       42
  MINIMUM         28   1159 PM -11    1983  18     10       37
  AVERAGE         41                        25     16       40

PRECIPITATION (IN)
  YESTERDAY        0.23          0.98 1888   0.06   0.17     0.21
  MONTH TO DATE    1.77                      1.95  -0.18     3.17
  SINCE DEC 1      1.77                      1.95  -0.18     3.17
  SINCE JAN 1     35.97                     36.59  -0.62    38.15

SNOWFALL (IN)
  YESTERDAY        0.0           5.6  2009   0.3   -0.3      0.0
  MONTH TO DATE   17.7                       6.6   11.1      1.5
  SINCE DEC 1     17.7                       6.6   11.1      1.5
  SINCE JUL 1     17.7                       8.0    9.7     12.7
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       24                        40    -16       25
  MONTH TO DATE 1058                       953    105      635
  SINCE DEC 1   1058                       953    105      635
  SINCE JUL 1   1887                      2209   -322     1608

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1   1157                       843    314      806
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    33   HIGHEST WIND DIRECTION     W (250)
  HIGHEST GUST SPEED    44   HIGHEST GUST DIRECTION     W (260)
  AVERAGE WIND SPEED    19.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.5


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           200 AM
 LOWEST     42           300 PM
 AVERAGE    71

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   32        61      2008
                                             1982
 MINIMUM TEMPERATURE (F)   18       -10      1950
                                             1886


SUNRISE AND SUNSET
DECEMBER 27 2016......SUNRISE   719 AM CST   SUNSET   427 PM CST
DECEMBER 28 2016......SUNRISE   719 AM CST   SUNSET   428 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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