Climatological Report (Daily)
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CDUS43 KLOT 042147
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
447 PM CDT FRI AUG 4 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR AUGUST 4 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         65    236 PM 100    1947  83    -18       91
  MINIMUM         56    544 AM  53    1992  64     -8       70
                                      1894
                                      1880
  AVERAGE         61                        74    -13       81

PRECIPITATION (IN)
  TODAY            T             3.47 1989   0.16  -0.16     0.02
  MONTH TO DATE    1.80                      0.65   1.15     0.02
  SINCE JUN 1     12.92                      7.80   5.12     9.10
  SINCE JAN 1     31.03                     20.88  10.15    22.74

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            4                         0      4        0
  MONTH TO DATE    4                         0      4        0
  SINCE JUN 1      7                        52    -45       13
  SINCE JUL 1      4                         4      0        0

 COOLING
  TODAY            0                         9     -9       16
  MONTH TO DATE   32                        36     -4       53
  SINCE JUN 1    568                       484     84      601
  SINCE JAN 1    601                       538     63      675
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    24   HIGHEST WIND DIRECTION    NW (300)
  HIGHEST GUST SPEED    31   HIGHEST GUST DIRECTION     W (280)
  AVERAGE WIND SPEED    16.4


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  LIGHT RAIN


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    78          1200 AM
 LOWEST     63           300 PM
 AVERAGE    71

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   83       102      1918
 MINIMUM TEMPERATURE (F)   64        51      1994


SUNRISE AND SUNSET
AUGUST  4 2017........SUNRISE   548 AM CDT   SUNSET   806 PM CDT
AUGUST  5 2017........SUNRISE   549 AM CDT   SUNSET   805 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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