Climatological Report (Daily)
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806
CDUS43 KLOT 182137
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
436 PM CDT WED OCT 18 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR OCTOBER 18 2017...
VALID TODAY AS OF 0400 PM LOCAL TIME.

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)
 TODAY
  MAXIMUM         71    253 PM  87    1950  62      9       76
  MINIMUM         47    445 AM  20    1948  42      5       55
  AVERAGE         59                        52      7       66

PRECIPITATION (IN)
  TODAY            0.00          2.09 1985   0.11  -0.11     0.00
  MONTH TO DATE    6.73                      1.80   4.93     1.65
  SINCE SEP 1      7.05                      5.01   2.04     3.41
  SINCE JAN 1     38.79                     30.14   8.65    30.39

SNOWFALL (IN)
  TODAY            0.0           0.7  1989   0.0    0.0      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

DEGREE DAYS
 HEATING
  TODAY            6                        13     -7        0
  MONTH TO DATE   54                       193   -139       88
  SINCE SEP 1     91                       298   -207      111
  SINCE JUL 1     96                       311   -215      111

 COOLING
  TODAY            0                         0      0        1
  MONTH TO DATE   25                        10     15       24
  SINCE SEP 1    204                       102    102      189
  SINCE JAN 1    987                       842    145     1154
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    23   HIGHEST WIND DIRECTION    SW (210)
  HIGHEST GUST SPEED    29   HIGHEST GUST DIRECTION     S (190)
  AVERAGE WIND SPEED    11.9


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.0


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    77           400 AM
 LOWEST     36           300 PM
 AVERAGE    57

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   61        84      1971
 MINIMUM TEMPERATURE (F)   42        21      1992


SUNRISE AND SUNSET
OCTOBER 18 2017.......SUNRISE   708 AM CDT   SUNSET   605 PM CDT
OCTOBER 19 2017.......SUNRISE   709 AM CDT   SUNSET   603 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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