Climatological Report (Daily)
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CDUS43 KLOT 050651
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
151 AM CDT THU OCT 5 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 4 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         76    246 PM  90    1951  67      9       75
  MINIMUM         58   1136 PM  32    1989  46     12       60
                                      1980
  AVERAGE         67                        57     10       68

PRECIPITATION (IN)
  YESTERDAY        0.03          2.57 1991   0.10  -0.07     0.00
  MONTH TO DATE    0.03                      0.40  -0.37     0.97
  SINCE SEP 1      0.35                      3.61  -3.26     2.73
  SINCE JAN 1     32.09                     28.74   3.35    29.71

SNOWFALL (IN)
  YESTERDAY        0.0           T    2014   0.0    0.0      0.0
  MONTH TO DATE    0.0                       0.0    0.0      0.0
  SINCE SEP 1      0.0                       0.0    0.0      0.0
  SINCE JUL 1      T                         0.0    0.0      0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        0                         9     -9        0
  MONTH TO DATE    5                        34    -29       11
  SINCE SEP 1     42                       139    -97       34
  SINCE JUL 1     47                       152   -105       34

 COOLING
  YESTERDAY        2                         1      1        3
  MONTH TO DATE   16                         4     12        3
  SINCE SEP 1    195                        96     99      168
  SINCE JAN 1    978                       836    142     1133
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    20   HIGHEST WIND DIRECTION    SW (210)
  HIGHEST GUST SPEED    26   HIGHEST GUST DIRECTION    SW (210)
  AVERAGE WIND SPEED     7.5


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.8


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           900 AM
 LOWEST     41           200 PM
 AVERAGE    67

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   67        88      1997
 MINIMUM TEMPERATURE (F)   46        28      1980


SUNRISE AND SUNSET
OCTOBER  5 2017.......SUNRISE   653 AM CDT   SUNSET   626 PM CDT
OCTOBER  6 2017.......SUNRISE   654 AM CDT   SUNSET   624 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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