Climatological Report (Daily)
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000
CDUS43 KLOT 160632
CLIMDW


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1232 AM CST SAT DEC 16 2017


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

...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR DECEMBER 15 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1928 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         38   1159 PM  64      MM  35      3       11
  MINIMUM         21   1239 AM  -8    1989  23     -2        1
                                      1951
  AVERAGE         30                        29      1        6

PRECIPITATION (IN)
  YESTERDAY        T             1.14 1987   0.08  -0.08     0.00
  MONTH TO DATE    0.05                      1.36  -1.31     0.86
  SINCE DEC 1      0.05                      1.36  -1.31     0.86
  SINCE JAN 1     41.33                     37.88   3.45    32.22

DEGREE DAYS
 HEATING
  YESTERDAY       35                        36     -1       59
  MONTH TO DATE  471                       507    -36      580
  SINCE DEC 1    471                       507    -36      580
  SINCE JUL 1   1454                      1642   -188     1292

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1   1151                      1045    106     1465
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED  10   RESULTANT WIND DIRECTION   W (250)
  HIGHEST WIND SPEED    24   HIGHEST WIND DIRECTION    NW (300)
  HIGHEST GUST SPEED    34   HIGHEST GUST DIRECTION     W (290)
  AVERAGE WIND SPEED    12.1



WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT SNOW


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


THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   35        63      1984
 MINIMUM TEMPERATURE (F)   22       -12      1951
                                             1932


SUNRISE AND SUNSET
DECEMBER 16 2017......SUNRISE   712 AM CST   SUNSET   421 PM CST
DECEMBER 17 2017......SUNRISE   713 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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