Climatological Report (Daily)
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000
CDUS43 KLOT 212232
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
432 PM CST TUE NOV 21 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR NOVEMBER 21 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         44    909 AM  72    1913  45     -1       41
  MINIMUM         35    359 PM   1    1880  30      5       22
  AVERAGE         40                        38      2       32

PRECIPITATION (IN)
  TODAY            0.02          1.49 1906   0.10  -0.08     0.00
  MONTH TO DATE    1.75                      2.20  -0.45     0.42
  SINCE SEP 1     10.77                      8.56   2.21     5.95
  SINCE JAN 1     42.51                     33.69   8.82    32.93

SNOWFALL (IN)
  TODAY           MM             7.0  2015   0.1   MM        0.0
  MONTH TO DATE    0.1                       0.5   -0.4       T
  SINCE SEP 1      0.1                       0.7   -0.6       T
  SINCE JUL 1      0.1                       0.7   -0.6       T

DEGREE DAYS
 HEATING
  TODAY           25                        27     -2       33
  MONTH TO DATE  543                       471     72      320
  SINCE SEP 1    831                       973   -142      609
  SINCE JUL 1    836                       986   -150      609

 COOLING
  TODAY            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    25   HIGHEST WIND DIRECTION    SW (210)
  HIGHEST GUST SPEED    34   HIGHEST GUST DIRECTION    SW (210)
  AVERAGE WIND SPEED    17.0


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  LIGHT RAIN


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    67           800 AM
 LOWEST     40           100 PM
 AVERAGE    54

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   45        69      1913
 MINIMUM TEMPERATURE (F)   30         4      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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