Climatological Report (Daily)
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CDUS43 KLOT 020632
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
131 AM CDT WED AUG 2 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR AUGUST 1 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         86    206 PM 100    1988  83      3       84
  MINIMUM         67    414 AM  51    1990  64      3       65
  AVERAGE         77                        74      3       75

PRECIPITATION (IN)
  YESTERDAY        0.92          2.55 1961   0.17   0.75     0.00
  MONTH TO DATE    0.92                      0.17   0.75     0.00
  SINCE JUN 1     12.04                      7.32   4.72     9.08
  SINCE JAN 1     30.15                     20.40   9.75    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       10
  MONTH TO DATE   12                         9      3       10
  SINCE JUN 1    548                       457     91      558
  SINCE JAN 1    581                       511     70      632
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    33   HIGHEST WIND DIRECTION     W (260)
  HIGHEST GUST SPEED    41   HIGHEST GUST DIRECTION     W (260)
  AVERAGE WIND SPEED     5.4


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.6


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    78           500 AM
 LOWEST     47          1000 AM
 AVERAGE    63

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   83       101      1991
 MINIMUM TEMPERATURE (F)   64        51      1985


SUNRISE AND SUNSET
AUGUST  2 2017........SUNRISE   546 AM CDT   SUNSET   809 PM CDT
AUGUST  3 2017........SUNRISE   548 AM CDT   SUNSET   807 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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