Climatological Report (Daily)
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000
CDUS43 KLOT 270637
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1237 AM CST SAT DEC 27 2014


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 26 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         50    125 PM  55    1971  32     18       34
  MINIMUM         36    733 AM -11    1983  18     18       14
  AVERAGE         43                        25     18       24

PRECIPITATION (IN)
  YESTERDAY        0.00          0.98 1888   0.06  -0.06      T
  MONTH TO DATE    0.79                      1.95  -1.16     1.59
  SINCE DEC 1      0.79                      1.95  -1.16     1.59
  SINCE JAN 1     39.47                     36.59   2.88    41.74

SNOWFALL (IN)
  YESTERDAY        0.0           5.6  2009   0.3   -0.3       T
  MONTH TO DATE    T                         6.6   -6.6     10.7
  SINCE DEC 1      T                         6.6   -6.6     10.7
  SINCE JUL 1      2.9                       8.0   -5.1     11.6
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       22                        40    -18       41
  MONTH TO DATE  810                       953   -143     1071
  SINCE DEC 1    810                       953   -143     1071
  SINCE JUL 1   2253                      2209     44     2354

 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    18   HIGHEST WIND DIRECTION    SW (210)
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION    SW (210)
  AVERAGE WIND SPEED    10.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.7


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    85           100 AM
 LOWEST     65          1200 PM
 AVERAGE    75

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   32        61      2008
                                             1982
 MINIMUM TEMPERATURE (F)   18       -10      1950
                                             1886


SUNRISE AND SUNSET
DECEMBER 27 2014......SUNRISE   719 AM CST   SUNSET   427 PM CST
DECEMBER 28 2014......SUNRISE   719 AM CST   SUNSET   428 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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