Climatological Report (Daily)
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000
CDUS43 KLOT 290637
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1237 AM CST THU DEC 29 2016


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 28 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2016


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         45    143 PM  69    1984  32     13       39
  MINIMUM         19   1203 AM -13    1924  18      1       31
  AVERAGE         32                        25      7       35

PRECIPITATION (IN)
  YESTERDAY        0.00          1.47 2015   0.06  -0.06     1.47
  MONTH TO DATE    1.77                      2.07  -0.30     4.78
  SINCE DEC 1      1.77                      2.07  -0.30     4.78
  SINCE JAN 1     35.97                     36.71  -0.74    39.76

SNOWFALL (IN)
  YESTERDAY        0.0           8.0  1987   0.3   -0.3      1.9
  MONTH TO DATE   17.7                       7.2   10.5      3.4
  SINCE DEC 1     17.7                       7.2   10.5      3.4
  SINCE JUL 1     17.7                       8.6    9.1     14.6
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       33                        40     -7       30
  MONTH TO DATE 1132                      1033     99      692
  SINCE DEC 1   1132                      1033     99      692
  SINCE JUL 1   1961                      2289   -328     1665

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1   1157                       843    314      806
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    30   HIGHEST WIND DIRECTION     S (200)
  HIGHEST GUST SPEED    39   HIGHEST GUST DIRECTION     S (200)
  AVERAGE WIND SPEED    12.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.6


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100          1200 AM
 LOWEST     41          1200 PM
 AVERAGE    71

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   32        63      1984
 MINIMUM TEMPERATURE (F)   18       -15      1880


SUNRISE AND SUNSET
DECEMBER 29 2016......SUNRISE   719 AM CST   SUNSET   429 PM CST
DECEMBER 30 2016......SUNRISE   719 AM CST   SUNSET   430 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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