Climatological Report (Daily)
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737
CDUS43 KLOT 100634
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1233 AM CST SAT DEC 10 2016


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 9 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2016


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         25    253 PM  62    1879  37    -12       52
  MINIMUM         18   1159 PM -14    1876  22     -4       40
  AVERAGE         22                        29     -7       46

PRECIPITATION (IN)
  YESTERDAY        T             1.47 2008   0.08  -0.08     0.00
  MONTH TO DATE    0.51                      0.80  -0.29     0.39
  SINCE DEC 1      0.51                      0.80  -0.29     0.39
  SINCE JAN 1     34.71                     35.44  -0.73    35.37

SNOWFALL (IN)
  YESTERDAY        T             5.1  1931   0.2   -0.2      0.0
  MONTH TO DATE    6.4                       1.9    4.5      1.3
  SINCE DEC 1      6.4                       1.9    4.5      1.3
  SINCE JUL 1      6.4                       3.3    3.1     12.5
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       43                        36      7       19
  MONTH TO DATE  314                       306      8      240
  SINCE DEC 1    314                       306      8      240
  SINCE JUL 1   1143                      1562   -419     1213

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1   1157                       843    314      806
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION     W (260)
  HIGHEST GUST SPEED    19   HIGHEST GUST DIRECTION    NW (310)
  AVERAGE WIND SPEED     9.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.8


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT SNOW


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    84           300 AM
 LOWEST     60           100 PM
 AVERAGE    72

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   36        62      1879
 MINIMUM TEMPERATURE (F)   22        -8      1978
                                             1919


SUNRISE AND SUNSET
DECEMBER 10 2016......SUNRISE   709 AM CST   SUNSET   420 PM CST
DECEMBER 11 2016......SUNRISE   710 AM CST   SUNSET   420 PM CST


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




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