Climatological Report (Daily)
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000
CDUS43 KLOT 120632
CLIMDW


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1232 AM CST TUE DEC 12 2017


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

...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR DECEMBER 11 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         40    235 PM  61    1949  36      4       35
  MINIMUM         26    214 AM  -5    1972  24      2       25
  AVERAGE         33                        30      3       30

PRECIPITATION (IN)
  YESTERDAY        0.03          1.73 1949   0.09  -0.06     0.30
  MONTH TO DATE    0.05                      1.04  -0.99     0.86
  SINCE DEC 1      0.05                      1.04  -0.99     0.86
  SINCE JAN 1     41.33                     37.56   3.77    32.22

DEGREE DAYS
 HEATING
  YESTERDAY       32                        35     -3       35
  MONTH TO DATE  320                       364    -44      378
  SINCE DEC 1    320                       364    -44      378
  SINCE JUL 1   1303                      1499   -196     1090

 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   1   RESULTANT WIND DIRECTION  SW (220)
  HIGHEST WIND SPEED    29   HIGHEST WIND DIRECTION     N (350)
  HIGHEST GUST SPEED    35   HIGHEST GUST DIRECTION     N (360)
  AVERAGE WIND SPEED     9.5



WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT SNOW
  FOG


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


THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   36        62      1991
 MINIMUM TEMPERATURE (F)   24        -7      1962


SUNRISE AND SUNSET
DECEMBER 12 2017......SUNRISE   709 AM CST   SUNSET   420 PM CST
DECEMBER 13 2017......SUNRISE   710 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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