Climatological Report (Daily)
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310
CDUS43 KLOT 112135
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
434 PM CDT MON SEP 11 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR SEPTEMBER 11 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         75    111 PM  95    1952  77     -2       76
  MINIMUM         52    443 AM  42    1993  56     -4       51
  AVERAGE         64                        67     -3       64

PRECIPITATION (IN)
  TODAY            0.00          2.37 2000   0.11  -0.11     0.00
  MONTH TO DATE    0.25                      1.24  -0.99     0.45
  SINCE SEP 1      0.25                      1.24  -0.99     0.45
  SINCE JAN 1     31.99                     26.37   5.62    27.43

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            1                         2     -1        1
  MONTH TO DATE   29                        15     14        1
  SINCE SEP 1     29                        15     14        1
  SINCE JUL 1     34                        28      6        1

 COOLING
  TODAY            0                         4     -4        0
  MONTH TO DATE   13                        53    -40       76
  SINCE SEP 1     13                        53    -40       76
  SINCE JAN 1    796                       793      3     1041
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    12   HIGHEST WIND DIRECTION    NE (60)
  HIGHEST GUST SPEED    15   HIGHEST GUST DIRECTION    NE (60)
  AVERAGE WIND SPEED     3.7


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.1


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    83          1200 AM
 LOWEST     33          1200 PM
 AVERAGE    58

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   76        96      1952
 MINIMUM TEMPERATURE (F)   56        44      2014
                                             1955


SUNRISE AND SUNSET
SEPTEMBER 11 2017.....SUNRISE   628 AM CDT   SUNSET   708 PM CDT
SEPTEMBER 12 2017.....SUNRISE   629 AM CDT   SUNSET   706 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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