Climatological Report (Daily)
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000
CDUS43 KLOT 110655
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1255 AM CST SUN DEC 11 2016


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 10 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         23   1159 PM  62    1879  36    -13       57
  MINIMUM         18    804 AM  -8    1978  22     -4       41
                                      1919
  AVERAGE         21                        29     -8       49

PRECIPITATION (IN)
  YESTERDAY        0.12          2.18 1971   0.08   0.04     0.00
  MONTH TO DATE    0.63                      0.88  -0.25     0.39
  SINCE DEC 1      0.63                      0.88  -0.25     0.39
  SINCE JAN 1     34.83                     35.52  -0.69    35.37

SNOWFALL (IN)
  YESTERDAY        2.7          10.9  1934   0.3    2.4      0.0
  MONTH TO DATE    9.1                       2.2    6.9      1.3
  SINCE DEC 1      9.1                       2.2    6.9      1.3
  SINCE JUL 1      9.1                       3.6    5.5     12.5
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       44                        36      8       16
  MONTH TO DATE  358                       342     16      256
  SINCE DEC 1    358                       342     16      256
  SINCE JUL 1   1187                      1598   -411     1229

 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 (270)
  HIGHEST GUST SPEED    18   HIGHEST GUST DIRECTION    SE (150)
  AVERAGE WIND SPEED     8.7


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT SNOW
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    92           700 PM
 LOWEST     65          1200 PM
 AVERAGE    79

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   36        61      1949
 MINIMUM TEMPERATURE (F)   22        -5      1972


SUNRISE AND SUNSET
DECEMBER 11 2016......SUNRISE   710 AM CST   SUNSET   420 PM CST
DECEMBER 12 2016......SUNRISE   711 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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