Climatological Report (Daily)
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094
CDUS43 KLOT 170634
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
133 AM CDT TUE OCT 17 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 16 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         63    242 PM  87    1963  62      1       72
  MINIMUM         43    312 AM  28    1991  43      0       65
  AVERAGE         53                        52      1       69

PRECIPITATION (IN)
  YESTERDAY        0.00          1.41 1878   0.09  -0.09     0.29
  MONTH TO DATE    6.73                      1.59   5.14     1.65
  SINCE SEP 1      7.05                      4.80   2.25     3.41
  SINCE JAN 1     38.79                     29.93   8.86    30.39

SNOWFALL (IN)
  YESTERDAY        0.0           T    2009   0.0    0.0      0.0
                                      1943
  MONTH TO DATE    0.0                       0.1   -0.1      0.0
  SINCE SEP 1      0.0                       0.1   -0.1      0.0
  SINCE JUL 1      T                         0.1   -0.1      0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       12                        13     -1        0
  MONTH TO DATE   43                       167   -124       88
  SINCE SEP 1     80                       272   -192      111
  SINCE JUL 1     85                       285   -200      111

 COOLING
  YESTERDAY        0                         0      0        4
  MONTH TO DATE   25                        10     15       13
  SINCE SEP 1    204                       102    102      178
  SINCE JAN 1    987                       842    145     1143
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION     W (250)
  HIGHEST GUST SPEED    20   HIGHEST GUST DIRECTION     W (250)
  AVERAGE WIND SPEED     7.3


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.1


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    83           200 AM
 LOWEST     34           300 PM
 AVERAGE    59

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   62        86      1950
 MINIMUM TEMPERATURE (F)   42        26      1948


SUNRISE AND SUNSET
OCTOBER 17 2017.......SUNRISE   707 AM CDT   SUNSET   606 PM CDT
OCTOBER 18 2017.......SUNRISE   708 AM CDT   SUNSET   605 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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