Climatological Report (Daily)
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CDUS43 KLOT 152132
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
431 PM CDT FRI SEP 15 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR SEPTEMBER 15 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         87    259 PM  99    1939  75     12       78
  MINIMUM         62    533 AM  39    2007  55      7       60
  AVERAGE         75                        65     10       69

PRECIPITATION (IN)
  TODAY            0.00          1.38 1936   0.10  -0.10     0.00
  MONTH TO DATE    0.25                      1.65  -1.40     0.54
  SINCE SEP 1      0.25                      1.65  -1.40     0.54
  SINCE JAN 1     31.99                     26.78   5.21    27.52

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                         3     -3        0
  MONTH TO DATE   29                        26      3        1
  SINCE SEP 1     29                        26      3        1
  SINCE JUL 1     34                        39     -5        1

 COOLING
  TODAY           10                         3      7        4
  MONTH TO DATE   32                        66    -34       96
  SINCE SEP 1     32                        66    -34       96
  SINCE JAN 1    815                       806      9     1061
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    16   HIGHEST WIND DIRECTION     S (160)
  HIGHEST GUST SPEED    20   HIGHEST GUST DIRECTION    SE (150)
  AVERAGE WIND SPEED     8.6


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.1


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    90           600 AM
 LOWEST     35           100 PM
 AVERAGE    63

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   75        92      1955
                                             1931
 MINIMUM TEMPERATURE (F)   54        37      1984


SUNRISE AND SUNSET
SEPTEMBER 15 2017.....SUNRISE   632 AM CDT   SUNSET   701 PM CDT
SEPTEMBER 16 2017.....SUNRISE   633 AM CDT   SUNSET   659 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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