Climatological Report (Daily)
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CDUS43 KLOT 042240
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
439 PM CST SUN DEC 4 2016


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR DECEMBER 4 2016...
VALID TODAY AS OF 0400 PM LOCAL TIME.

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)
 TODAY
  MAXIMUM         33   1033 AM  66    1998  39     -6       47
  MINIMUM         29    422 AM   0    1893  24      5       32
  AVERAGE         31                        31      0       40

PRECIPITATION (IN)
  TODAY            0.41          1.19 1973   0.09   0.32     0.00
  MONTH TO DATE    0.41                      0.37   0.04     0.39
  SINCE DEC 1      0.41                      0.37   0.04     0.39
  SINCE JAN 1     34.61                     35.01  -0.40    35.37

SNOWFALL (IN)
  TODAY            0.9           5.1  2010   0.2    0.7      0.0
  MONTH TO DATE    0.9                       0.8    0.1      1.3
  SINCE DEC 1      0.9                       0.8    0.1      1.3
  SINCE JUL 1      0.9                       2.2   -1.3     12.5

DEGREE DAYS
 HEATING
  TODAY           34                        34      0       25
  MONTH TO DATE  122                       132    -10      112
  SINCE DEC 1    122                       132    -10      112
  SINCE JUL 1    951                      1388   -437     1085

 COOLING
  TODAY            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    10   HIGHEST WIND DIRECTION    SE (140)
  HIGHEST GUST SPEED    12   HIGHEST GUST DIRECTION    SE (140)
  AVERAGE WIND SPEED     2.9


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100          1200 PM
 LOWEST     72           100 AM
 AVERAGE    86

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   38        68      2001
 MINIMUM TEMPERATURE (F)   24         4      2005


SUNRISE AND SUNSET
DECEMBER  4 2016......SUNRISE   704 AM CST   SUNSET   420 PM CST
DECEMBER  5 2016......SUNRISE   704 AM CST   SUNSET   420 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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