Climatological Report (Daily)
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CDUS43 KLOT 150633
CLIPWK


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1233 AM CST FRI DEC 15 2017


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

...THE CHICAGO EXECUTIVE CLIMATE SUMMARY FOR DECEMBER 14 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1996 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         27    259 PM  61    2015  35     -8       20
  MINIMUM         15    744 AM   3    2016  21     -6        3
  AVERAGE         21                        28     -7       12

PRECIPITATION (IN)
  YESTERDAY        T             0.89 2011   0.05  -0.05     0.00
  MONTH TO DATE    0.27                      0.94  -0.67     0.85
  SINCE DEC 1      0.27                      0.94  -0.67     0.85
  SINCE JAN 1     42.26                     32.46   9.80    33.08

DEGREE DAYS
 HEATING
  YESTERDAY       44                        37      7       53
  MONTH TO DATE  449                       486    -37      538
  SINCE DEC 1    449                       486    -37      538
  SINCE JUL 1   1525                      1756   -231     1392

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1    829                       789     40     1071
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED   5   RESULTANT WIND DIRECTION  NW (320)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION     N (340)
  HIGHEST GUST SPEED    26   HIGHEST GUST DIRECTION     N (350)
  AVERAGE WIND SPEED     6.8



WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT SNOW


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


THE CHICAGO EXECUTIVE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   35        58      2011
 MINIMUM TEMPERATURE (F)   21        -1      2016


SUNRISE AND SUNSET
DECEMBER 15 2017......SUNRISE   713 AM CST   SUNSET   421 PM CST
DECEMBER 16 2017......SUNRISE   714 AM CST   SUNSET   421 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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