Climatological Report (Daily)
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000
CDUS43 KLOT 170653
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
153 AM CDT THU AUG 17 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR AUGUST 16 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         88        MM  98    1988  82      6       88
                                      1983
  MINIMUM         67        MM  48    2004  63      4       71
  AVERAGE         78                        73      5       80

PRECIPITATION (IN)
  YESTERDAY        0.17          3.79 1968   0.17   0.00     0.02
  MONTH TO DATE    2.00                      2.64  -0.64     1.00
  SINCE JUN 1     13.12                      9.79   3.33    10.08
  SINCE JAN 1     31.23                     22.87   8.36    23.72

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 JUN 1      T                         0.0    0.0      0.0
  SINCE JUL 1      T                         0.0    0.0      0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    3                         0      3        0
  SINCE JUN 1      6                        52    -46       13
  SINCE JUL 1      3                         4     -1        0

 COOLING
  YESTERDAY       13                         8      5       15
  MONTH TO DATE  114                       135    -21      204
  SINCE JUN 1    650                       583     67      752
  SINCE JAN 1    683                       637     46      826
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    16   HIGHEST WIND DIRECTION     E (100)
  HIGHEST GUST SPEED    30   HIGHEST GUST DIRECTION     S (190)
  AVERAGE WIND SPEED     8.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.6


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  THUNDERSTORM
  HEAVY RAIN
  RAIN
  LIGHT RAIN
  FOG
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    88          1100 PM
 LOWEST     51          1200 PM
 AVERAGE    70

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   82        98      1988
                                             1947
 MINIMUM TEMPERATURE (F)   63        48      1976


SUNRISE AND SUNSET
AUGUST 17 2017........SUNRISE   602 AM CDT   SUNSET   749 PM CDT
AUGUST 18 2017........SUNRISE   603 AM CDT   SUNSET   747 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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