Climatological Report (Daily)
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000
CDUS43 KLOT 130633
CLIMDW


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1232 AM CST WED DEC 13 2017


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

...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR DECEMBER 12 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         32   1235 AM  62    1991  36     -4       34
  MINIMUM         18    742 AM  -7    1962  24     -6       14
  AVERAGE         25                        30     -5       24

PRECIPITATION (IN)
  YESTERDAY        T             1.76 1972   0.08  -0.08      T
  MONTH TO DATE    0.05                      1.12  -1.07     0.86
  SINCE DEC 1      0.05                      1.12  -1.07     0.86
  SINCE JAN 1     41.33                     37.64   3.69    32.22

DEGREE DAYS
 HEATING
  YESTERDAY       40                        35      5       41
  MONTH TO DATE  360                       399    -39      419
  SINCE DEC 1    360                       399    -39      419
  SINCE JUL 1   1343                      1534   -191     1131

 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  13   RESULTANT WIND DIRECTION  NW (320)
  HIGHEST WIND SPEED    30   HIGHEST WIND DIRECTION    NW (330)
  HIGHEST GUST SPEED    38   HIGHEST GUST DIRECTION    NW (330)
  AVERAGE WIND SPEED    14.4



WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT SNOW


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


THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   36        67      1975
 MINIMUM TEMPERATURE (F)   23        -3      2000
                                             1958


SUNRISE AND SUNSET
DECEMBER 13 2017......SUNRISE   710 AM CST   SUNSET   421 PM CST
DECEMBER 14 2017......SUNRISE   711 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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