Climatological Report (Daily)
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CDUS43 KLOT 110631
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
131 AM CDT MON SEP 11 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 10 2017...

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)
 YESTERDAY
  MAXIMUM         70    314 PM  95    2013  77     -7       73
                                      1983
  MINIMUM         50    602 AM  44    1943  57     -7       59
  AVERAGE         60                        67     -7       66

PRECIPITATION (IN)
  YESTERDAY        0.00          2.48 1922   0.10  -0.10     0.01
  MONTH TO DATE    0.25                      1.13  -0.88     0.45
  SINCE SEP 1      0.25                      1.13  -0.88     0.45
  SINCE JAN 1     31.99                     26.26   5.73    27.43

SNOWFALL (IN)
  YESTERDAY        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
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        5                         2      3        0
  MONTH TO DATE   28                        13     15        0
  SINCE SEP 1     28                        13     15        0
  SINCE JUL 1     33                        26      7        0

 COOLING
  YESTERDAY        0                         4     -4        1
  MONTH TO DATE   13                        49    -36       76
  SINCE SEP 1     13                        49    -36       76
  SINCE JAN 1    796                       789      7     1041
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION     E (80)
  HIGHEST GUST SPEED    20   HIGHEST GUST DIRECTION     E (100)
  AVERAGE WIND SPEED     6.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    83          1100 PM
 LOWEST     37          1200 PM
 AVERAGE    60

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   77        95      1952
 MINIMUM TEMPERATURE (F)   56        42      1993


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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