Climatological Report (Daily)
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966
CDUS43 KLOT 180635
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
135 AM CDT TUE JUL 18 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR JULY 17 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         79    431 PM 100    1942  84     -5       83
                                      1887
  MINIMUM         56    454 AM  51    1985  64     -8       61
  AVERAGE         68                        74     -6       72

PRECIPITATION (IN)
  YESTERDAY        0.00          3.04 1969   0.11  -0.11     0.25
  MONTH TO DATE    3.10                      1.88   1.22     2.37
  SINCE JUN 1      6.54                      5.33   1.21     5.22
  SINCE JAN 1     24.65                     18.41   6.24    18.86

SNOWFALL (IN)
  YESTERDAY        0.0           T    2003   0.0    0.0      0.0
  MONTH TO DATE    T                         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                        48    -45       13
  SINCE JUL 1      0                         0      0        0

 COOLING
  YESTERDAY        3                         9     -6        7
  MONTH TO DATE  155                       152      3      139
  SINCE JUN 1    385                       317     68      355
  SINCE JAN 1    418                       371     47      429
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION     E (90)
  HIGHEST GUST SPEED    16   HIGHEST GUST DIRECTION    NE (60)
  AVERAGE WIND SPEED     6.3


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.3


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           400 AM
 LOWEST     42          1200 PM
 AVERAGE    68

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   84       100      1946
 MINIMUM TEMPERATURE (F)   64        53      1979


SUNRISE AND SUNSET
JULY 18 2017..........SUNRISE   532 AM CDT   SUNSET   823 PM CDT
JULY 19 2017..........SUNRISE   533 AM CDT   SUNSET   822 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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