Climatological Report (Daily)
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CDUS43 KLOT 310633
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1233 AM CST SAT DEC 31 2016


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 30 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         38   1159 PM  61    1884  32      6       29
  MINIMUM         24    821 AM  -7    1909  18      6       27
  AVERAGE         31                        25      6       28

PRECIPITATION (IN)
  YESTERDAY        0.00          1.69 1972   0.06  -0.06     0.09
  MONTH TO DATE    1.77                      2.19  -0.42     4.87
  SINCE DEC 1      1.77                      2.19  -0.42     4.87
  SINCE JAN 1     35.97                     36.83  -0.86    39.85

SNOWFALL (IN)
  YESTERDAY        0.0           5.1  1927   0.3   -0.3      1.1
  MONTH TO DATE   17.7                       7.9    9.8      4.5
  SINCE DEC 1     17.7                       7.9    9.8      4.5
  SINCE JUL 1     17.7                       9.3    8.4     15.7
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       34                        40     -6       37
  MONTH TO DATE 1198                      1113     85      760
  SINCE DEC 1   1198                      1113     85      760
  SINCE JUL 1   2027                      2369   -342     1733

 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    29   HIGHEST WIND DIRECTION     S (200)
  HIGHEST GUST SPEED    39   HIGHEST GUST DIRECTION    SW (210)
  AVERAGE WIND SPEED    13.5


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    74           500 AM
 LOWEST     49           200 PM
 AVERAGE    62

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   32        68      1875
 MINIMUM TEMPERATURE (F)   17       -10      1967


SUNRISE AND SUNSET
DECEMBER 31 2016......SUNRISE   720 AM CST   SUNSET   430 PM CST
JANUARY  1 2017.......SUNRISE   720 AM CST   SUNSET   431 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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