Climatological Report (Daily)
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079
CDUS43 KLOT 130633
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
133 AM CDT SUN AUG 13 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR AUGUST 12 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         77    147 PM 101    1918  82     -5       83
  MINIMUM         60    524 AM  47    1982  64     -4       74
  AVERAGE         69                        73     -4       79

PRECIPITATION (IN)
  YESTERDAY        0.00          2.03 1908   0.17  -0.17     0.96
  MONTH TO DATE    1.83                      1.95  -0.12     0.98
  SINCE JUN 1     12.95                      9.10   3.85    10.06
  SINCE JAN 1     31.06                     22.18   8.88    23.70

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        4                         8     -4       14
  MONTH TO DATE   78                       103    -25      157
  SINCE JUN 1    614                       551     63      705
  SINCE JAN 1    647                       605     42      779
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION     N (10)
  HIGHEST GUST SPEED    19   HIGHEST GUST DIRECTION    NE (30)
  AVERAGE WIND SPEED     7.3


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.4


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    84           100 AM
 LOWEST     50           200 PM
 AVERAGE    67

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   82        98      1944
 MINIMUM TEMPERATURE (F)   64        51      2004
                                             1982


SUNRISE AND SUNSET
AUGUST 13 2017........SUNRISE   558 AM CDT   SUNSET   754 PM CDT
AUGUST 14 2017........SUNRISE   559 AM CDT   SUNSET   753 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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