Climatological Report (Daily)
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464
CDUS43 KLOT 162133
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
432 PM CDT SAT SEP 16 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR SEPTEMBER 16 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         88    135 PM  92    1955  75     13       83
                                      1931
  MINIMUM         65    605 AM  37    1984  54     11       65
  AVERAGE         77                        65     12       74

PRECIPITATION (IN)
  TODAY            0.00          1.16 1980   0.11  -0.11     0.01
  MONTH TO DATE    0.25                      1.76  -1.51     0.55
  SINCE SEP 1      0.25                      1.76  -1.51     0.55
  SINCE JAN 1     31.99                     26.89   5.10    27.53

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                        29      0        1
  SINCE SEP 1     29                        29      0        1
  SINCE JUL 1     34                        42     -8        1

 COOLING
  TODAY           12                         3      9        9
  MONTH TO DATE   44                        69    -25      105
  SINCE SEP 1     44                        69    -25      105
  SINCE JAN 1    827                       809     18     1070
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    18   HIGHEST WIND DIRECTION     S (200)
  HIGHEST GUST SPEED    36   HIGHEST GUST DIRECTION    SW (210)
  AVERAGE WIND SPEED     8.4


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.2


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  FOG
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    87           600 AM
 LOWEST     40           200 PM
 AVERAGE    64

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   75        93      1955
 MINIMUM TEMPERATURE (F)   54        37      1984


SUNRISE AND SUNSET
SEPTEMBER 16 2017.....SUNRISE   633 AM CDT   SUNSET   659 PM CDT
SEPTEMBER 17 2017.....SUNRISE   634 AM CDT   SUNSET   657 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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