Climatological Report (Daily)
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CDUS43 KLOT 040632
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
132 AM CDT WED OCT 4 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 3 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         78    511 PM  91    1954  68     10       67
  MINIMUM         67    316 AM  29    1981  47     20       57
                                      1974
  AVERAGE         73                        57     16       62

PRECIPITATION (IN)
  YESTERDAY        T             3.95 1954   0.11  -0.11     0.00
  MONTH TO DATE    T                         0.30  -0.30     0.97
  SINCE SEP 1      0.32                      3.51  -3.19     2.73
  SINCE JAN 1     32.06                     28.64   3.42    29.71

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 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        3
  MONTH TO DATE    5                        25    -20       11
  SINCE SEP 1     42                       130    -88       34
  SINCE JUL 1     47                       143    -96       34

 COOLING
  YESTERDAY        8                         1      7        0
  MONTH TO DATE   14                         3     11        0
  SINCE SEP 1    193                        95     98      165
  SINCE JAN 1    976                       835    141     1130
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    23   HIGHEST WIND DIRECTION    SW (210)
  HIGHEST GUST SPEED    28   HIGHEST GUST DIRECTION    SW (210)
  AVERAGE WIND SPEED    14.7


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.7


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    79           900 PM
 LOWEST     51          1200 AM
 AVERAGE    65

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   67        90      1951
 MINIMUM TEMPERATURE (F)   46        32      1989
                                             1980


SUNRISE AND SUNSET
OCTOBER  4 2017.......SUNRISE   652 AM CDT   SUNSET   628 PM CDT
OCTOBER  5 2017.......SUNRISE   653 AM CDT   SUNSET   626 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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