Climatological Report (Daily)
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000
CDUS43 KLOT 110641
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
141 AM CDT FRI AUG 11 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR AUGUST 10 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         84    406 PM  99    1944  83      1       89
  MINIMUM         62    352 AM  49    1982  64     -2       69
                                      1972
  AVERAGE         73                        73      0       79

PRECIPITATION (IN)
  YESTERDAY        0.03          1.87 1979   0.16  -0.13     0.00
  MONTH TO DATE    1.83                      1.61   0.22     0.02
  SINCE JUN 1     12.95                      8.76   4.19     9.10
  SINCE JAN 1     31.06                     21.84   9.22    22.74

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        8                         8      0       14
  MONTH TO DATE   67                        87    -20      125
  SINCE JUN 1    603                       535     68      673
  SINCE JAN 1    636                       589     47      747
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    20   HIGHEST WIND DIRECTION     N (350)
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION    SW (210)
  AVERAGE WIND SPEED     8.3


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.8


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    90           700 PM
 LOWEST     45          1100 AM
 AVERAGE    68

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   82        98      1941
                                             1874
 MINIMUM TEMPERATURE (F)   64        47      1982


SUNRISE AND SUNSET
AUGUST 11 2017........SUNRISE   556 AM CDT   SUNSET   757 PM CDT
AUGUST 12 2017........SUNRISE   557 AM CDT   SUNSET   756 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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