Climatological Report (Daily)
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000
CDUS43 KLOT 180632
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1232 AM CST SAT FEB 18 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR FEBRUARY 17 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         67R   402 PM  60    1880  36     31       34
  MINIMUM         27    432 AM -11    1903  21      6       21
  AVERAGE         47                        28     19       28

PRECIPITATION (IN)
  YESTERDAY        0.00          1.10 2008   0.06  -0.06     0.00
  MONTH TO DATE    0.47                      0.97  -0.50     1.00
  SINCE DEC 1      5.11                      4.95   0.16     6.71
  SINCE JAN 1      3.34                      2.70   0.64     1.84

SNOWFALL (IN)
  YESTERDAY        0.0           8.5  1893   0.4   -0.4      0.0
  MONTH TO DATE    T                         5.9   -5.9      3.8
  SINCE DEC 1     18.3                      24.9   -6.6     14.6
  SINCE JUL 1     18.3                      26.3   -8.0     25.8
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       18                        37    -19       37
  MONTH TO DATE  557                       662   -105      682
  SINCE DEC 1   2905                      3096   -191     2721
  SINCE JUL 1   3734                      4352   -618     3694

 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    20   HIGHEST WIND DIRECTION     S (200)
  HIGHEST GUST SPEED    23   HIGHEST GUST DIRECTION    SW (230)
  AVERAGE WIND SPEED     8.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.3


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    85           600 AM
 LOWEST     34           300 PM
 AVERAGE    60

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   36        62      1981
                                             1961
 MINIMUM TEMPERATURE (F)   21       -14      1936


SUNRISE AND SUNSET
FEBRUARY 18 2017......SUNRISE   643 AM CST   SUNSET   529 PM CST
FEBRUARY 19 2017......SUNRISE   641 AM CST   SUNSET   530 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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