Climatological Report (Daily)
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000
CDUS43 KLOT 170642
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1240 AM CST TUE JAN 17 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR JANUARY 16 2017...

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)
 YESTERDAY
  MAXIMUM         37   1159 PM  57    1990  31      6       30
  MINIMUM         30   1250 AM -25    1982  16     14        9
  AVERAGE         34                        24     10       20

PRECIPITATION (IN)
  YESTERDAY        0.90R         0.56 1885   0.05   0.85     0.00
  MONTH TO DATE    1.61                      0.96   0.65     0.60
  SINCE DEC 1      3.38                      3.21   0.17     5.47
  SINCE JAN 1      1.61                      0.96   0.65     0.60

SNOWFALL (IN)
  YESTERDAY        T             6.4  1885   0.3   -0.3      0.0
  MONTH TO DATE    0.4                       5.3   -4.9      5.0
  SINCE DEC 1     18.1                      13.5    4.6      9.5
  SINCE JUL 1     18.1                      14.9    3.2     20.7
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       31                        42    -11       45
  MONTH TO DATE  669                       658     11      633
  SINCE DEC 1   1900                      1813     87     1433
  SINCE JUL 1   2729                      3069   -340     2406

 COOLING
  YESTERDAY        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    12   HIGHEST WIND DIRECTION     E (100)
  HIGHEST GUST SPEED    14   HIGHEST GUST DIRECTION     E (100)
  AVERAGE WIND SPEED     5.9


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN
  LT FREEZING RAIN
  SLEET
  FOG
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           400 PM
 LOWEST     78          1200 AM
 AVERAGE    89

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   31        60      1894
 MINIMUM TEMPERATURE (F)   16       -23      1982


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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