Climatological Report (Daily)
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000
CDUS43 KLOT 281124
CLIORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
133 AM CDT SAT OCT 28 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 27 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         52   1202 AM  83    1927  58     -6       51
  MINIMUM         38   1159 PM  24    1942  40     -2       42
  AVERAGE         45                        49     -4       47

PRECIPITATION (IN)
  YESTERDAY        T             1.56 1947   0.11  -0.11      T
  MONTH TO DATE    8.70                      2.73   5.97     3.27
  SINCE SEP 1      9.02                      5.94   3.08     5.03
  SINCE JAN 1     40.76                     31.07   9.69    32.01

SNOWFALL (IN)
  YESTERDAY        0.0           2.7  1967   0.0    0.0      0.0
  MONTH TO DATE    0.0                       0.2   -0.2      0.0
  SINCE SEP 1      0.0                       0.2   -0.2      0.0
  SINCE JUL 1      T                         0.2   -0.2      0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       20                        16      4       18
  MONTH TO DATE  150                       328   -178      221
  SINCE SEP 1    187                       433   -246      244
  SINCE JUL 1    192                       446   -254      244

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE   29                        10     19       24
  SINCE SEP 1    208                       102    106      189
  SINCE JAN 1    991                       842    149     1154
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    24   HIGHEST WIND DIRECTION    SW (240)
  HIGHEST GUST SPEED    33   HIGHEST GUST DIRECTION    SW (220)
  AVERAGE WIND SPEED    15.7


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    71           100 AM
 LOWEST     55           300 PM
 AVERAGE    63

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   58        80      1999
 MINIMUM TEMPERATURE (F)   39        19      1925


SUNRISE AND SUNSET
OCTOBER 28 2017.......SUNRISE   720 AM CDT   SUNSET   551 PM CDT
OCTOBER 29 2017.......SUNRISE   721 AM CDT   SUNSET   549 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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