Climatological Report (Daily)
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CDUS43 KLOT 180636
CLIPWK


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1233 AM CST MON DEC 18 2017


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

...THE CHICAGO EXECUTIVE CLIMATE SUMMARY FOR DECEMBER 17 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         43   1104 PM  53    2006  34      9       22
  MINIMUM         29   1206 AM   0    2000  20      9       18
  AVERAGE         36                        27      9       20

PRECIPITATION (IN)
  YESTERDAY        0.00          0.13 2013   0.05  -0.05    MM
  MONTH TO DATE    0.27                      1.08  -0.81     0.93
  SINCE DEC 1      0.27                      1.08  -0.81     0.93
  SINCE JAN 1     42.26                     32.60   9.66    33.16

DEGREE DAYS
 HEATING
  YESTERDAY       29                        38     -9       45
  MONTH TO DATE  540                       598    -58      694
  SINCE DEC 1    540                       598    -58      694
  SINCE JUL 1   1616                      1868   -252     1548

 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   2   RESULTANT WIND DIRECTION  NE (50)
  HIGHEST WIND SPEED    10   HIGHEST WIND DIRECTION    NE (60)
  HIGHEST GUST SPEED    14   HIGHEST GUST DIRECTION    NE (40)
  AVERAGE WIND SPEED     3.4



WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG
  HAZE


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


THE CHICAGO EXECUTIVE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   34        55      2002
 MINIMUM TEMPERATURE (F)   20        -6      2016


SUNRISE AND SUNSET
DECEMBER 18 2017......SUNRISE   715 AM CST   SUNSET   422 PM CST
DECEMBER 19 2017......SUNRISE   716 AM CST   SUNSET   422 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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