Climatological Report (Daily)
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597
CDUS43 KLOT 210636
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1236 AM CST TUE NOV 21 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR NOVEMBER 20 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         52    431 PM  68    1930  46      6       35
                                      1913
  MINIMUM         30   1210 AM   8    1873  31     -1       23
  AVERAGE         41                        38      3       29

PRECIPITATION (IN)
  YESTERDAY        0.00          1.23 1970   0.11  -0.11     0.00
  MONTH TO DATE    1.73                      2.10  -0.37     0.42
  SINCE SEP 1     10.75                      8.46   2.29     5.95
  SINCE JAN 1     42.49                     33.59   8.90    32.93

SNOWFALL (IN)
  YESTERDAY        0.0           4.2  2015   0.1   -0.1      0.0
  MONTH TO DATE    0.1                       0.4   -0.3       T
  SINCE SEP 1      0.1                       0.6   -0.5       T
  SINCE JUL 1      0.1                       0.6   -0.5       T
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       24                        27     -3       36
  MONTH TO DATE  518                       444     74      287
  SINCE SEP 1    806                       946   -140      576
  SINCE JUL 1    811                       959   -148      576

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        3
  SINCE SEP 1    208                       103    105      192
  SINCE JAN 1    991                       843    148     1157
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    29   HIGHEST WIND DIRECTION    SW (210)
  HIGHEST GUST SPEED    39   HIGHEST GUST DIRECTION    SW (210)
  AVERAGE WIND SPEED    17.9


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.5


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    69          1200 AM
 LOWEST     46           100 PM
 AVERAGE    58

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   45        72      1913
 MINIMUM TEMPERATURE (F)   30         1      1880


SUNRISE AND SUNSET
NOVEMBER 21 2017......SUNRISE   649 AM CST   SUNSET   426 PM CST
NOVEMBER 22 2017......SUNRISE   650 AM CST   SUNSET   425 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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