Climatological Report (Daily)
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000
CDUS43 KLOT 250636
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1234 AM CST THU DEC 25 2014


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 24 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         40    229 PM  64    1889  33      7       18
  MINIMUM         36   1159 PM -25    1983  19     17       -2
  AVERAGE         38                        26     12        8

PRECIPITATION (IN)
  YESTERDAY        T             2.61 1965   0.06  -0.06     0.01
  MONTH TO DATE    0.79                      1.83  -1.04     1.52
  SINCE DEC 1      0.79                      1.83  -1.04     1.52
  SINCE JAN 1     39.47                     36.47   3.00    41.67

SNOWFALL (IN)
  YESTERDAY        0.0           7.1  1918   0.3   -0.3      0.1
  MONTH TO DATE    T                         6.0   -6.0      9.5
  SINCE DEC 1      T                         6.0   -6.0      9.5
  SINCE JUL 1      2.9                       7.4   -4.5     10.4
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       27                        39    -12       57
  MONTH TO DATE  761                       873   -112      988
  SINCE DEC 1    761                       873   -112      988
  SINCE JUL 1   2204                      2129     75     2271

 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    20   HIGHEST WIND DIRECTION     W (280)
  HIGHEST GUST SPEED    24   HIGHEST GUST DIRECTION     W (290)
  AVERAGE WIND SPEED     8.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    89          1000 PM
 LOWEST     79          1200 AM
 AVERAGE    84

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   32        64      1982
 MINIMUM TEMPERATURE (F)   18       -17      1983


SUNRISE AND SUNSET
DECEMBER 25 2014......SUNRISE   718 AM CST   SUNSET   426 PM CST
DECEMBER 26 2014......SUNRISE   718 AM CST   SUNSET   426 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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