Climatological Report (Daily)
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371
CDUS43 KLOT 070632
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
131 AM CDT THU SEP 7 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 6 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         67    239 PM  97    1960  78    -11       91
                                      1954
  MINIMUM         49    528 AM  42    1984  59    -10       75
  AVERAGE         58                        68    -10       83

PRECIPITATION (IN)
  YESTERDAY        T             1.53 1894   0.12  -0.12      T
  MONTH TO DATE    0.25                      0.70  -0.45      T
  SINCE SEP 1      0.25                      0.70  -0.45      T
  SINCE JAN 1     31.99                     25.83   6.16    26.98

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        7                         1      6        0
  MONTH TO DATE   17                         6     11        0
  SINCE SEP 1     17                         6     11        0
  SINCE JUL 1     22                        19      3        0

 COOLING
  YESTERDAY        0                         5     -5       18
  MONTH TO DATE   13                        32    -19       40
  SINCE SEP 1     13                        32    -19       40
  SINCE JAN 1    796                       772     24     1005
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    21   HIGHEST WIND DIRECTION     N (350)
  HIGHEST GUST SPEED    24   HIGHEST GUST DIRECTION     N (340)
  AVERAGE WIND SPEED    10.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.6


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    86           400 AM
 LOWEST     40           200 PM
 AVERAGE    63

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   78       100      1960
                                             1939
 MINIMUM TEMPERATURE (F)   58        42      1986


SUNRISE AND SUNSET
SEPTEMBER  7 2017.....SUNRISE   624 AM CDT   SUNSET   715 PM CDT
SEPTEMBER  8 2017.....SUNRISE   625 AM CDT   SUNSET   713 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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