Climatological Report (Daily)
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CDUS43 KLOT 310643
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
142 AM CDT FRI JUL 31 2015


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR JULY 30 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2015


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         88    321 PM 102    1916  83      5       79
  MINIMUM         65    515 AM  50    1984  64      1       59
  AVERAGE         77                        74      3       69

PRECIPITATION (IN)
  YESTERDAY        0.00          2.43 1979   0.14  -0.14     0.00
  MONTH TO DATE    2.85                      3.55  -0.70     2.14
  SINCE JUN 1      9.97                      7.00   2.97     9.95
  SINCE JAN 1     21.46                     20.08   1.38    24.78

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      0.0                       0.0    0.0      0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE   13                         0     13        5
  SINCE JUN 1     52                        48      4       17
  SINCE JUL 1     13                         0     13        5

 COOLING
  YESTERDAY       12                         9      3        4
  MONTH TO DATE  234                       269    -35      172
  SINCE JUN 1    352                       434    -82      370
  SINCE JAN 1    405                       488    -83      431
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    23   HIGHEST WIND DIRECTION    NW (300)
  HIGHEST GUST SPEED    28   HIGHEST GUST DIRECTION    NW (320)
  AVERAGE WIND SPEED    11.6


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.1


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    78           500 AM
 LOWEST     29           100 PM
 AVERAGE    54

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   83        99      2006
                                             1945
 MINIMUM TEMPERATURE (F)   64        51      1984


SUNRISE AND SUNSET
JULY 31 2015..........SUNRISE   544 AM CDT   SUNSET   812 PM CDT
AUGUST  1 2015........SUNRISE   545 AM CDT   SUNSET   810 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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