Climatological Report (Daily)
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000
CDUS43 KLOT 110639
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
138 AM CDT WED OCT 11 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 10 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         63   1038 AM  86    1962  65     -2       71
  MINIMUM         58    806 PM  27    1964  44     14       45
  AVERAGE         61                        54      7       58

PRECIPITATION (IN)
  YESTERDAY        0.78          3.94 1954   0.10   0.68     0.00
  MONTH TO DATE    1.55                      1.00   0.55     1.22
  SINCE SEP 1      1.87                      4.21  -2.34     2.98
  SINCE JAN 1     33.61                     29.34   4.27    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        4                        11     -7        7
  MONTH TO DATE    9                        95    -86       46
  SINCE SEP 1     46                       200   -154       69
  SINCE JUL 1     51                       213   -162       69

 COOLING
  YESTERDAY        0                         1     -1        0
  MONTH TO DATE   25                        10     15        9
  SINCE SEP 1    204                       102    102      174
  SINCE JAN 1    987                       842    145     1139
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    23   HIGHEST WIND DIRECTION    NE (40)
  HIGHEST GUST SPEED    30   HIGHEST GUST DIRECTION    NE (30)
  AVERAGE WIND SPEED    13.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  HEAVY RAIN
  RAIN
  LIGHT RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           600 PM
 LOWEST     67          1200 PM
 AVERAGE    80

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   64        87      1928
 MINIMUM TEMPERATURE (F)   44        27      1996
                                             1906


SUNRISE AND SUNSET
OCTOBER 11 2017.......SUNRISE   700 AM CDT   SUNSET   616 PM CDT
OCTOBER 12 2017.......SUNRISE   701 AM CDT   SUNSET   614 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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