Climatological Report (Daily)
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000
CDUS43 KLOT 120635
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
135 AM CDT THU OCT 12 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 11 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         62   1255 AM  87    1928  64     -2       73
  MINIMUM         56   1159 PM  27    1996  44     12       54
                                      1906
  AVERAGE         59                        54      5       64

PRECIPITATION (IN)
  YESTERDAY        0.79          1.47 1972   0.10   0.69      T
  MONTH TO DATE    2.34                      1.10   1.24     1.22
  SINCE SEP 1      2.66                      4.31  -1.65     2.98
  SINCE JAN 1     34.40                     29.44   4.96    29.96

SNOWFALL (IN)
  YESTERDAY        0.0           T    1909   0.0    0.0      0.0
                                      1906
                                      1905
  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        6                        11     -5        1
  MONTH TO DATE   15                       106    -91       47
  SINCE SEP 1     52                       211   -159       70
  SINCE JUL 1     57                       224   -167       70

 COOLING
  YESTERDAY        0                         0      0        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 (60)
  HIGHEST GUST SPEED    33   HIGHEST GUST DIRECTION    NE (60)
  AVERAGE WIND SPEED    12.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           600 AM
 LOWEST     86           600 PM
 AVERAGE    90

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   64        84      2008
                                             1960
                                             1956
 MINIMUM TEMPERATURE (F)   44        28      1988
                                             1987


SUNRISE AND SUNSET
OCTOBER 12 2017.......SUNRISE   701 AM CDT   SUNSET   614 PM CDT
OCTOBER 13 2017.......SUNRISE   702 AM CDT   SUNSET   613 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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