Climatological Report (Daily)
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000
CDUS43 KLOT 260634
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1233 AM CST FRI DEC 26 2014


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 25 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         42    420 PM  64    1982  32     10       27
  MINIMUM         33    804 AM -17    1983  18     15       18
  AVERAGE         38                        25     13       23

PRECIPITATION (IN)
  YESTERDAY        0.00          0.50 1950   0.06  -0.06     0.07
                                      1909
  MONTH TO DATE    0.79                      1.89  -1.10     1.59
  SINCE DEC 1      0.79                      1.89  -1.10     1.59
  SINCE JAN 1     39.47                     36.53   2.94    41.74

SNOWFALL (IN)
  YESTERDAY        0.0           5.1  1950   0.3   -0.3      1.2
  MONTH TO DATE    T                         6.3   -6.3     10.7
  SINCE DEC 1      T                         6.3   -6.3     10.7
  SINCE JUL 1      2.9                       7.7   -4.8     11.6
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       27                        40    -13       42
  MONTH TO DATE  788                       913   -125     1030
  SINCE DEC 1    788                       913   -125     1030
  SINCE JUL 1   2231                      2169     62     2313

 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    22   HIGHEST WIND DIRECTION     W (260)
  HIGHEST GUST SPEED    29   HIGHEST GUST DIRECTION     W (260)
  AVERAGE WIND SPEED    14.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    82          1200 AM
 LOWEST     62           300 PM
 AVERAGE    72

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   32        55      1971
 MINIMUM TEMPERATURE (F)   18       -11      1983


SUNRISE AND SUNSET
DECEMBER 26 2014......SUNRISE   718 AM CST   SUNSET   426 PM CST
DECEMBER 27 2014......SUNRISE   719 AM CST   SUNSET   427 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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