Climatological Report (Daily)
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CDUS43 KLOT 020632
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
131 AM CDT MON OCT 2 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 1 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         72    201 PM  92    1971  68      4       64
  MINIMUM         48    401 AM  32    1974  48      0       57
                                      1886
  AVERAGE         60                        58      2       61

PRECIPITATION (IN)
  YESTERDAY        0.00          1.22 1911   0.10  -0.10     0.94
  MONTH TO DATE    0.00                      0.10  -0.10     0.94
  SINCE SEP 1      0.32                      3.31  -2.99     2.70
  SINCE JAN 1     32.06                     28.44   3.62    29.68

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        5                         8     -3        4
  MONTH TO DATE    5                         8     -3        4
  SINCE SEP 1     42                       113    -71       27
  SINCE JUL 1     47                       126    -79       27

 COOLING
  YESTERDAY        0                         1     -1        0
  MONTH TO DATE    0                         1     -1        0
  SINCE SEP 1    179                        93     86      165
  SINCE JAN 1    962                       833    129     1130
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    18   HIGHEST WIND DIRECTION    SE (140)
  HIGHEST GUST SPEED    22   HIGHEST GUST DIRECTION    SE (140)
  AVERAGE WIND SPEED    10.3


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.6


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    71           400 AM
 LOWEST     27           200 PM
 AVERAGE    49

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   68        91      1971
 MINIMUM TEMPERATURE (F)   47        28      1974


SUNRISE AND SUNSET
OCTOBER  2 2017.......SUNRISE   650 AM CDT   SUNSET   631 PM CDT
OCTOBER  3 2017.......SUNRISE   651 AM CDT   SUNSET   629 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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