Climatological Report (Daily)
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CDUS43 KLOT 300637
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
136 AM CDT SUN JUL 30 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR JULY 29 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    417 PM  99    1913  84     -5       81
  MINIMUM         64   1106 PM  50    1984  64      0       70
  AVERAGE         72                        74     -2       76

PRECIPITATION (IN)
  YESTERDAY        0.00          1.58 1989   0.13  -0.13     0.11
  MONTH TO DATE    7.68                      3.41   4.27     6.23
  SINCE JUN 1     11.12                      6.86   4.26     9.08
  SINCE JAN 1     29.23                     19.94   9.29    22.72

SNOWFALL (IN)
  YESTERDAY        0.0           0.0    MM   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        7                         9     -2       11
  MONTH TO DATE  287                       260     27      316
  SINCE JUN 1    517                       425     92      532
  SINCE JAN 1    550                       479     71      606
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    20   HIGHEST WIND DIRECTION    NE (40)
  HIGHEST GUST SPEED    26   HIGHEST GUST DIRECTION    NE (40)
  AVERAGE WIND SPEED     9.9


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.2


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    81          1200 AM
 LOWEST     39           100 PM
 AVERAGE    60

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   83       102      1916
 MINIMUM TEMPERATURE (F)   64        50      1984


SUNRISE AND SUNSET
JULY 30 2017..........SUNRISE   543 AM CDT   SUNSET   812 PM CDT
JULY 31 2017..........SUNRISE   544 AM CDT   SUNSET   811 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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