Climatological Report (Daily)
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000
CDUS43 KLOT 012139
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
438 PM CDT TUE AUG 1 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR AUGUST 1 2017...
VALID TODAY AS OF 0400 PM LOCAL TIME.

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)
 TODAY
  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)
  TODAY            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)
  TODAY            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

DEGREE DAYS
 HEATING
  TODAY            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
  TODAY           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     1.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.7


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


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

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


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


SUNRISE AND SUNSET
AUGUST  1 2017........SUNRISE   545 AM CDT   SUNSET   810 PM CDT
AUGUST  2 2017........SUNRISE   546 AM CDT   SUNSET   809 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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