Climatological Report (Daily)
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000
CDUS43 KLOT 172242
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
441 PM CST TUE JAN 17 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR JANUARY 17 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         39   1212 PM  60    1894  31      8        8
  MINIMUM         36    909 AM -23    1982  16     20       -1
  AVERAGE         38                        23     15        4

PRECIPITATION (IN)
  TODAY            0.48          0.70 1910   0.06   0.42     0.00
  MONTH TO DATE    2.09                      1.02   1.07     0.60
  SINCE DEC 1      3.86                      3.27   0.59     5.47
  SINCE JAN 1      2.09                      1.02   1.07     0.60

SNOWFALL (IN)
  TODAY            0.0           4.9  1970   0.4   -0.4      0.0
  MONTH TO DATE    0.4                       5.7   -5.3      5.0
  SINCE DEC 1     18.1                      13.9    4.2      9.5
  SINCE JUL 1     18.1                      15.3    2.8     20.7

DEGREE DAYS
 HEATING
  TODAY           27                        42    -15       61
  MONTH TO DATE  696                       700     -4      694
  SINCE DEC 1   1927                      1855     72     1494
  SINCE JUL 1   2756                      3111   -355     2467

 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    16   HIGHEST WIND DIRECTION     W (280)
  HIGHEST GUST SPEED    20   HIGHEST GUST DIRECTION     W (280)
  AVERAGE WIND SPEED     9.5


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  THUNDERSTORM
  LIGHT RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100          1200 AM
 LOWEST     92           800 AM
 AVERAGE    96

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   31        61      1996
 MINIMUM TEMPERATURE (F)   16       -21      1994


SUNRISE AND SUNSET
JANUARY 17 2017.......SUNRISE   716 AM CST   SUNSET   448 PM CST
JANUARY 18 2017.......SUNRISE   715 AM CST   SUNSET   449 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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