Climatological Report (Daily)
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CDUS43 KLOT 110644
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1243 AM CST THU DEC 11 2014


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 10 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2014


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         33    145 PM  62    1879  36     -3       21
  MINIMUM         28   1159 PM  -8    1978  22      6       -6
                                      1919
  AVERAGE         31                        29      2        8

PRECIPITATION (IN)
  YESTERDAY        T             2.18 1971   0.08  -0.08      T
  MONTH TO DATE    0.20                      0.88  -0.68     0.35
  SINCE DEC 1      0.20                      0.88  -0.68     0.35
  SINCE JAN 1     38.88                     35.52   3.36    40.50

SNOWFALL (IN)
  YESTERDAY        T            10.9  1934   0.3   -0.3      0.2
  MONTH TO DATE    T                         2.2   -2.2      3.3
  SINCE DEC 1      T                         2.2   -2.2      3.3
  SINCE JUL 1      2.9                       3.6   -0.7      4.2
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       34                        36     -2       57
  MONTH TO DATE  341                       342     -1      381
  SINCE DEC 1    341                       342     -1      381
  SINCE JUL 1   1784                      1598    186     1664

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1    799                       843    -44      933
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION    NW (330)
  HIGHEST GUST SPEED    18   HIGHEST GUST DIRECTION    NW (330)
  AVERAGE WIND SPEED    11.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    78          1200 AM
 LOWEST     69           100 PM
 AVERAGE    74

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


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 2014......SUNRISE   709 AM CST   SUNSET   420 PM CST
DECEMBER 12 2014......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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