Climatological Report (Daily)
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CDUS43 KLOT 090644
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
144 AM CDT MON OCT 9 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 8 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         78    346 PM  88    1997  66     12       65
  MINIMUM         54    628 AM  27    1987  45      9       40
  AVERAGE         66                        55     11       53

PRECIPITATION (IN)
  YESTERDAY        0.00          1.26 1884   0.09  -0.09     0.00
  MONTH TO DATE    0.77                      0.79  -0.02     1.22
  SINCE SEP 1      1.09                      4.00  -2.91     2.98
  SINCE JAN 1     32.83                     29.13   3.70    29.96

SNOWFALL (IN)
  YESTERDAY        0.0           0.0    MM   0.0    0.0      0.0
  MONTH TO DATE    0.0                       0.0    0.0      0.0
  SINCE SEP 1      0.0                       0.0    0.0      0.0
  SINCE JUL 1      T                         0.0    0.0      0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        0                        10    -10       12
  MONTH TO DATE    5                        73    -68       29
  SINCE SEP 1     42                       178   -136       52
  SINCE JUL 1     47                       191   -144       52

 COOLING
  YESTERDAY        1                         1      0        0
  MONTH TO DATE   23                         8     15        9
  SINCE SEP 1    202                       100    102      174
  SINCE JAN 1    985                       840    145     1139
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION     S (170)
  HIGHEST GUST SPEED    22   HIGHEST GUST DIRECTION     S (170)
  AVERAGE WIND SPEED     7.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.1


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           400 AM
 LOWEST     36           200 PM
 AVERAGE    65

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   65        86      2010
                                             1949
 MINIMUM TEMPERATURE (F)   45        30      2000


SUNRISE AND SUNSET
OCTOBER  9 2017.......SUNRISE   658 AM CDT   SUNSET   619 PM CDT
OCTOBER 10 2017.......SUNRISE   659 AM CDT   SUNSET   618 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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