Climatological Report (Daily)
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CDUS43 KLOT 030639
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
137 AM CDT THU AUG 3 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR AUGUST 2 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         87    204 PM 101    1991  83      4       87
  MINIMUM         66    438 AM  51    1985  64      2       67
  AVERAGE         77                        74      3       77

PRECIPITATION (IN)
  YESTERDAY        T             5.63 1885   0.16  -0.16     0.00
  MONTH TO DATE    0.92                      0.33   0.59     0.00
  SINCE JUN 1     12.04                      7.48   4.56     9.08
  SINCE JAN 1     30.15                     20.56   9.59    22.72

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    0                         0      0        0
  SINCE JUN 1      3                        52    -49       13
  SINCE JUL 1      0                         4     -4        0

 COOLING
  YESTERDAY       12                         9      3       12
  MONTH TO DATE   24                        18      6       22
  SINCE JUN 1    560                       466     94      570
  SINCE JAN 1    593                       520     73      644
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    21   HIGHEST WIND DIRECTION     N (20)
  HIGHEST GUST SPEED    31   HIGHEST GUST DIRECTION     N (20)
  AVERAGE WIND SPEED     6.9


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.6


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           500 AM
 LOWEST     37           200 PM
 AVERAGE    65

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   83        98      1964
                                             1944
                                             1930
 MINIMUM TEMPERATURE (F)   64        48      1894


SUNRISE AND SUNSET
AUGUST  3 2017........SUNRISE   546 AM CDT   SUNSET   807 PM CDT
AUGUST  4 2017........SUNRISE   548 AM CDT   SUNSET   806 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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