Climatological Report (Daily)
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000
CDUS43 KLOT 220632
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1232 AM CST MON DEC 22 2014


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 21 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         36    806 PM  62    1967  33      3       35
  MINIMUM         31   1154 PM -14    1989  19     12       30
  AVERAGE         34                        26      8       33

PRECIPITATION (IN)
  YESTERDAY        T             1.81 1949   0.07  -0.07     0.24
  MONTH TO DATE    0.28                      1.65  -1.37     1.31
  SINCE DEC 1      0.28                      1.65  -1.37     1.31
  SINCE JAN 1     38.96                     36.29   2.67    41.46

SNOWFALL (IN)
  YESTERDAY        T             3.6  1983   0.3   -0.3      0.0
  MONTH TO DATE    T                         5.2   -5.2      9.3
  SINCE DEC 1      T                         5.2   -5.2      9.3
  SINCE JUL 1      2.9                       6.6   -3.7     10.2
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       31                        39     -8       32
  MONTH TO DATE  682                       756    -74      843
  SINCE DEC 1    682                       756    -74      843
  SINCE JUL 1   2125                      2012    113     2126

 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    17   HIGHEST WIND DIRECTION     S (180)
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION     S (180)
  AVERAGE WIND SPEED    10.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    85          1200 AM
 LOWEST     75           900 AM
 AVERAGE    80

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   33        57      1957
                                             1875
 MINIMUM TEMPERATURE (F)   19       -21      1872


SUNRISE AND SUNSET
DECEMBER 22 2014......SUNRISE   717 AM CST   SUNSET   424 PM CST
DECEMBER 23 2014......SUNRISE   717 AM CST   SUNSET   424 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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