Climatological Report (Daily)
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CDUS43 KLOT 050633
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1230 AM CST TUE DEC 5 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 4 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         65    345 PM  66    1998  39     26       33
  MINIMUM         44   1159 PM   0    1893  24     20       27
  AVERAGE         55                        31     24       30

PRECIPITATION (IN)
  YESTERDAY        0.16          1.19 1973   0.09   0.07     0.50
  MONTH TO DATE    0.16                      0.37  -0.21     0.50
  SINCE DEC 1      0.16                      0.37  -0.21     0.50
  SINCE JAN 1     42.67                     35.01   7.66    34.70

SNOWFALL (IN)
  YESTERDAY       MM             6.4  2016   0.2   MM        6.4
  MONTH TO DATE    0.0                       0.8   -0.8      6.4
  SINCE DEC 1      0.0                       0.8   -0.8      6.4
  SINCE JUL 1      0.1                       2.2   -2.1      6.4
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       10                        34    -24       35
  MONTH TO DATE   76                       132    -56      123
  SINCE DEC 1     76                       132    -56      123
  SINCE JUL 1   1119                      1388   -269      952

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1    991                       843    148     1157
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    35   HIGHEST WIND DIRECTION     W (250)
  HIGHEST GUST SPEED    47   HIGHEST GUST DIRECTION     S (190)
  AVERAGE WIND SPEED    21.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  THUNDERSTORM
  RAIN
  LIGHT RAIN
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    78          1000 PM
 LOWEST     50           100 AM
 AVERAGE    64

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


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


SUNRISE AND SUNSET
DECEMBER  5 2017......SUNRISE   704 AM CST   SUNSET   420 PM CST
DECEMBER  6 2017......SUNRISE   705 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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