Climatological Report (Daily)
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000
CDUS43 KLOT 130640
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
139 AM CDT FRI OCT 13 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 12 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         60    327 PM  84    2008  64     -4       69
                                      1960
                                      1956
  MINIMUM         56    120 AM  28    1988  44     12       45
                                      1987
  AVERAGE         58                        54      4       57

PRECIPITATION (IN)
  YESTERDAY        T             1.40 1973   0.10  -0.10     0.14
  MONTH TO DATE    2.34                      1.20   1.14     1.36
  SINCE SEP 1      2.66                      4.41  -1.75     3.12
  SINCE JAN 1     34.40                     29.54   4.86    30.10

SNOWFALL (IN)
  YESTERDAY        0.0           0.3  2006   0.1   -0.1      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        7                        12     -5        8
  MONTH TO DATE   22                       118    -96       55
  SINCE SEP 1     59                       223   -164       78
  SINCE JUL 1     64                       236   -172       78

 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    12   HIGHEST WIND DIRECTION    SE (140)
  HIGHEST GUST SPEED    14   HIGHEST GUST DIRECTION     S (160)
  AVERAGE WIND SPEED     6.6


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    87          1000 PM
 LOWEST     72           100 PM
 AVERAGE    80

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   64        88      1975
 MINIMUM TEMPERATURE (F)   44        25      1988


SUNRISE AND SUNSET
OCTOBER 13 2017.......SUNRISE   702 AM CDT   SUNSET   613 PM CDT
OCTOBER 14 2017.......SUNRISE   703 AM CDT   SUNSET   611 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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