Climatological Report (Daily)
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000
CDUS43 KLOT 081114
CLIORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
132 AM CDT SUN OCT 8 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 7 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         79    122 PM  87    2007  66     13       70
  MINIMUM         60   1000 PM  29    2001  45     15       47
  AVERAGE         70                        56     14       59

PRECIPITATION (IN)
  YESTERDAY        0.43          1.39 1930   0.10   0.33      T
  MONTH TO DATE    0.77                      0.70   0.07     1.22
  SINCE SEP 1      1.09                      3.91  -2.82     2.98
  SINCE JAN 1     32.83                     29.04   3.79    29.96

SNOWFALL (IN)
  YESTERDAY        0.0           T    2000   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        6
  MONTH TO DATE    5                        63    -58       17
  SINCE SEP 1     42                       168   -126       40
  SINCE JUL 1     47                       181   -134       40

 COOLING
  YESTERDAY        5                         1      4        0
  MONTH TO DATE   22                         7     15        9
  SINCE SEP 1    201                        99    102      174
  SINCE JAN 1    984                       839    145     1139
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    31   HIGHEST WIND DIRECTION     W (250)
  HIGHEST GUST SPEED    39   HIGHEST GUST DIRECTION    SW (210)
  AVERAGE WIND SPEED    17.6


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    84           400 PM
 LOWEST     56          1200 PM
 AVERAGE    70

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   66        88      1997
 MINIMUM TEMPERATURE (F)   45        27      1987


SUNRISE AND SUNSET
OCTOBER  8 2017.......SUNRISE   657 AM CDT   SUNSET   621 PM CDT
OCTOBER  9 2017.......SUNRISE   658 AM CDT   SUNSET   619 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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