Climatological Report (Daily)
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677
CDUS43 KLOT 122236
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
435 PM CST THU JAN 12 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR JANUARY 12 2017...
VALID TODAY AS OF 0400 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         28   1212 AM  62    2005  31     -3       20
                                      1890
  MINIMUM         21    804 AM -14    1918  16      5        3
  AVERAGE         25                        24      1       12

PRECIPITATION (IN)
  TODAY            0.05          2.76 1960   0.06  -0.01     0.01
  MONTH TO DATE    0.71                      0.74  -0.03     0.59
  SINCE DEC 1      2.48                      2.99  -0.51     5.46
  SINCE JAN 1      0.71                      0.74  -0.03     0.59

SNOWFALL (IN)
  TODAY            0.2           8.1  1908   0.4   -0.2      0.1
  MONTH TO DATE    0.4                       4.0   -3.6      4.9
  SINCE DEC 1     18.1                      12.2    5.9      9.4
  SINCE JUL 1     18.1                      13.6    4.5     20.6

DEGREE DAYS
 HEATING
  TODAY           40                        41     -1       53
  MONTH TO DATE  520                       492     28      476
  SINCE DEC 1   1751                      1647    104     1276
  SINCE JUL 1   2580                      2903   -323     2249

 COOLING
  TODAY            0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1      0                         0      0        0
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION     N (20)
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION     N (350)
  AVERAGE WIND SPEED    11.5


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  LIGHT RAIN
  LT FREEZING RAIN
  SNOW
  LIGHT SNOW
  SLEET
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    96           500 AM
 LOWEST     74           400 PM
 AVERAGE    85

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   31        58      1932
 MINIMUM TEMPERATURE (F)   16        -9      1929
                                             1888


SUNRISE AND SUNSET
JANUARY 12 2017.......SUNRISE   718 AM CST   SUNSET   442 PM CST
JANUARY 13 2017.......SUNRISE   718 AM CST   SUNSET   444 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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