Climatological Report (Daily)
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CDUS43 KLOT 232131
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
430 PM CDT SAT SEP 23 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR SEPTEMBER 23 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         95R  1241 PM  91    1937  72     23       73
  MINIMUM         72    426 AM  29    1995  51     21       67
  AVERAGE         84                        61     23       70

PRECIPITATION (IN)
  TODAY            0.00          2.09 1961   0.10  -0.10      T
  MONTH TO DATE    0.32                      2.50  -2.18     1.14
  SINCE SEP 1      0.32                      2.50  -2.18     1.14
  SINCE JAN 1     32.06                     27.63   4.43    28.12

SNOWFALL (IN)
  TODAY            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

DEGREE DAYS
 HEATING
  TODAY            0                         5     -5        0
  MONTH TO DATE   29                        59    -30        1
  SINCE SEP 1     29                        59    -30        1
  SINCE JUL 1     34                        72    -38        1

 COOLING
  TODAY           19                         2     17        5
  MONTH TO DATE  131                        84     47      151
  SINCE SEP 1    131                        84     47      151
  SINCE JAN 1    914                       824     90     1116
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION     E (100)
  HIGHEST GUST SPEED    18   HIGHEST GUST DIRECTION     E (100)
  AVERAGE WIND SPEED     4.6


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.2


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    74           100 AM
 LOWEST     36          1200 PM
 AVERAGE    55

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   72        91      1891
 MINIMUM TEMPERATURE (F)   51        35      1989
                                             1985
                                             1942


SUNRISE AND SUNSET
SEPTEMBER 23 2017.....SUNRISE   640 AM CDT   SUNSET   647 PM CDT
SEPTEMBER 24 2017.....SUNRISE   641 AM CDT   SUNSET   645 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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