Climatological Report (Daily)
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CDUS43 KLOT 020640
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1239 AM CST SAT DEC 2 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 1 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         53    134 PM  68    1970  40     13       41
  MINIMUM         28    640 AM  -6    1893  26      2       35
  AVERAGE         41                        33      8       38

PRECIPITATION (IN)
  YESTERDAY        0.00          1.23 2006   0.09  -0.09      T
  MONTH TO DATE    0.00                      0.09  -0.09      T
  SINCE DEC 1      0.00                      0.09  -0.09      T
  SINCE JAN 1     42.51                     34.73   7.78    34.20

SNOWFALL (IN)
  YESTERDAY        0.0           7.8  1978   0.2   -0.2       T
  MONTH TO DATE    0.0                       0.2   -0.2       T
  SINCE DEC 1      0.0                       0.2   -0.2       T
  SINCE JUL 1      0.1                       1.6   -1.5       T
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       24                        32     -8       27
  MONTH TO DATE   24                        32     -8       27
  SINCE DEC 1     24                        32     -8       27
  SINCE JUL 1   1067                      1288   -221      856

 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    13   HIGHEST WIND DIRECTION    SW (210)
  HIGHEST GUST SPEED    15   HIGHEST GUST DIRECTION    SW (220)
  AVERAGE WIND SPEED     5.0


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.3


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    78           600 AM
 LOWEST     38           100 PM
 AVERAGE    58

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   40        71      1982
 MINIMUM TEMPERATURE (F)   25        -1      1942
                                             1893


SUNRISE AND SUNSET
DECEMBER  2 2017......SUNRISE   701 AM CST   SUNSET   421 PM CST
DECEMBER  3 2017......SUNRISE   702 AM CST   SUNSET   421 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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