Climatological Report (Daily)
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000
CDUS43 KLOT 120633
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1233 AM CST SUN FEB 12 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR FEBRUARY 11 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         49    127 PM  70    1999  34     15       21
  MINIMUM         34    626 AM -14    1885  19     15        7
  AVERAGE         42                        26     16       14

PRECIPITATION (IN)
  YESTERDAY        0.00          0.83 2009   0.06  -0.06     0.00
  MONTH TO DATE    0.47                      0.59  -0.12     0.85
  SINCE DEC 1      5.11                      4.57   0.54     6.56
  SINCE JAN 1      3.34                      2.32   1.02     1.69

SNOWFALL (IN)
  YESTERDAY        0.0           8.3  1956   0.4   -0.4      0.0
  MONTH TO DATE    T                         3.9   -3.9      1.0
  SINCE DEC 1     18.3                      22.9   -4.6     11.8
  SINCE JUL 1     18.3                      24.3   -6.0     23.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       23                        39    -16       51
  MONTH TO DATE  396                       437    -41      411
  SINCE DEC 1   2744                      2871   -127     2450
  SINCE JUL 1   3573                      4127   -554     3423

 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    16   HIGHEST WIND DIRECTION     N (20)
  HIGHEST GUST SPEED    19   HIGHEST GUST DIRECTION     N (10)
  AVERAGE WIND SPEED     6.7


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    96           600 AM
 LOWEST     61           100 PM
 AVERAGE    79

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   34        62      1984
                                             1882
 MINIMUM TEMPERATURE (F)   19       -17      1899


SUNRISE AND SUNSET
FEBRUARY 12 2017......SUNRISE   651 AM CST   SUNSET   521 PM CST
FEBRUARY 13 2017......SUNRISE   650 AM CST   SUNSET   522 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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