Climatological Report (Daily)
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000
CDUS43 KLOT 232135
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
435 PM CDT MON OCT 23 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR OCTOBER 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         54    252 PM  85    1963  60     -6       73
  MINIMUM         51    748 AM  20    1981  41     10       41
  AVERAGE         53                        50      3       57

PRECIPITATION (IN)
  TODAY            0.70          1.40 1957   0.10   0.60     0.00
  MONTH TO DATE    7.80                      2.31   5.49     1.67
  SINCE SEP 1      8.12                      5.52   2.60     3.43
  SINCE JAN 1     39.86                     30.65   9.21    30.41

SNOWFALL (IN)
  TODAY            0.0           0.7  1929   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           12                        15     -3        8
  MONTH TO DATE   74                       265   -191      150
  SINCE SEP 1    111                       370   -259      173
  SINCE JUL 1    116                       383   -267      173

 COOLING
  TODAY            0                         0      0        0
  MONTH TO DATE   29                        10     19       24
  SINCE SEP 1    208                       102    106      189
  SINCE JAN 1    991                       842    149     1154
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION     N (10)
  HIGHEST GUST SPEED    18   HIGHEST GUST DIRECTION     N (350)
  AVERAGE WIND SPEED     8.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  HEAVY RAIN
  RAIN
  LIGHT RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    96           100 AM
 LOWEST     77           300 PM
 AVERAGE    87

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   59        83      1963
 MINIMUM TEMPERATURE (F)   41        17      1981


SUNRISE AND SUNSET
OCTOBER 23 2017.......SUNRISE   714 AM CDT   SUNSET   557 PM CDT
OCTOBER 24 2017.......SUNRISE   715 AM CDT   SUNSET   556 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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