Climatological Report (Daily)
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000
CDUS43 KLOT 100632
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
131 AM CDT TUE OCT 10 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 9 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         81    332 PM  86    2010  65     16       63
                                      1949
  MINIMUM         52    254 AM  30    2000  45      7       47
  AVERAGE         67                        55     12       55

PRECIPITATION (IN)
  YESTERDAY        0.00          2.27 1954   0.11  -0.11     0.00
  MONTH TO DATE    0.77                      0.90  -0.13     1.22
  SINCE SEP 1      1.09                      4.11  -3.02     2.98
  SINCE JAN 1     32.83                     29.24   3.59    29.96

SNOWFALL (IN)
  YESTERDAY        0.0           T    1925   0.0    0.0      0.0
                                      1906
  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                        11    -11       10
  MONTH TO DATE    5                        84    -79       39
  SINCE SEP 1     42                       189   -147       62
  SINCE JUL 1     47                       202   -155       62

 COOLING
  YESTERDAY        2                         1      1        0
  MONTH TO DATE   25                         9     16        9
  SINCE SEP 1    204                       101    103      174
  SINCE JAN 1    987                       841    146     1139
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    16   HIGHEST WIND DIRECTION     N (20)
  HIGHEST GUST SPEED    20   HIGHEST GUST DIRECTION    NE (30)
  AVERAGE WIND SPEED     5.6


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.2


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    84           700 PM
 LOWEST     39          1200 PM
 AVERAGE    62

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   65        86      1962
 MINIMUM TEMPERATURE (F)   44        27      1964


SUNRISE AND SUNSET
OCTOBER 10 2017.......SUNRISE   659 AM CDT   SUNSET   618 PM CDT
OCTOBER 11 2017.......SUNRISE   700 AM CDT   SUNSET   616 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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