Climatological Report (Daily)
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000
CDUS43 KLOT 042234
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
433 PM CST MON DEC 4 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR DECEMBER 4 2017...
VALID TODAY AS OF 0400 PM LOCAL TIME.

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)
 TODAY
  MAXIMUM         65    345 PM  66    1998  39     26       33
  MINIMUM         51    520 AM   0    1893  24     27       27
  AVERAGE         58                        31     27       30

PRECIPITATION (IN)
  TODAY            0.02          1.19 1973   0.09  -0.07     0.50
  MONTH TO DATE    0.02                      0.37  -0.35     0.50
  SINCE DEC 1      0.02                      0.37  -0.35     0.50
  SINCE JAN 1     42.53                     35.01   7.52    34.70

SNOWFALL (IN)
  TODAY            0.0           6.4  2016   0.2   -0.2      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

DEGREE DAYS
 HEATING
  TODAY            7                        34    -27       35
  MONTH TO DATE   73                       132    -59      123
  SINCE DEC 1     73                       132    -59      123
  SINCE JUL 1   1116                      1388   -272      952

 COOLING
  TODAY            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    32   HIGHEST WIND DIRECTION     S (190)
  HIGHEST GUST SPEED    41   HIGHEST GUST DIRECTION     S (190)
  AVERAGE WIND SPEED    20.5


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  LIGHT RAIN
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    61           700 AM
 LOWEST     50           100 AM
 AVERAGE    56

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


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 2017......SUNRISE   703 AM CST   SUNSET   420 PM CST
DECEMBER  5 2017......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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