Climatological Report (Daily)
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CDUS43 KLOT 200633
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
132 AM CDT FRI OCT 20 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 19 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         70    127 PM  84    1971  61      9       71
  MINIMUM         51    636 AM  21    1992  42      9       49
  AVERAGE         61                        52      9       60

PRECIPITATION (IN)
  YESTERDAY        0.00          2.22 1885   0.10  -0.10     0.02
  MONTH TO DATE    6.73                      1.90   4.83     1.67
  SINCE SEP 1      7.05                      5.11   1.94     3.43
  SINCE JAN 1     38.79                     30.24   8.55    30.41

SNOWFALL (IN)
  YESTERDAY        0.0           3.8  1989   0.0    0.0      0.0
  MONTH TO DATE    0.0                       0.1   -0.1      0.0
  SINCE SEP 1      0.0                       0.1   -0.1      0.0
  SINCE JUL 1      T                         0.1   -0.1      0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        4                        14    -10        5
  MONTH TO DATE   58                       207   -149       93
  SINCE SEP 1     95                       312   -217      116
  SINCE JUL 1    100                       325   -225      116

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE   25                        10     15       24
  SINCE SEP 1    204                       102    102      189
  SINCE JAN 1    987                       842    145     1154
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION    SW (220)
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION    SW (220)
  AVERAGE WIND SPEED     6.5


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.5


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    77           400 AM
 LOWEST     17           100 PM
 AVERAGE    47

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   61        86      1953
 MINIMUM TEMPERATURE (F)   42        24      1930
                                             1895


SUNRISE AND SUNSET
OCTOBER 20 2017.......SUNRISE   710 AM CDT   SUNSET   602 PM CDT
OCTOBER 21 2017.......SUNRISE   711 AM CDT   SUNSET   600 PM CDT


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




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