Climatological Report (Daily)
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000
CDUS43 KLOT 210636
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1234 AM CST TUE FEB 21 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR FEBRUARY 20 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         70R   228 PM  64    1930  37     33       57
  MINIMUM         41   1255 AM  -9    1896  22     19       38
  AVERAGE         56                        29     27       48

PRECIPITATION (IN)
  YESTERDAY        0.00          1.16 2014   0.07  -0.07     0.00
  MONTH TO DATE    0.47                      1.18  -0.71     1.00
  SINCE DEC 1      5.11                      5.16  -0.05     6.71
  SINCE JAN 1      3.34                      2.91   0.43     1.84

SNOWFALL (IN)
  YESTERDAY        0.0           2.8  1989   0.3   -0.3      0.0
  MONTH TO DATE    T                         6.8   -6.8      3.8
  SINCE DEC 1     18.3                      25.8   -7.5     14.6
  SINCE JUL 1     18.3                      27.2   -8.9     25.8
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        9                        36    -27       17
  MONTH TO DATE  589                       770   -181      744
  SINCE DEC 1   2937                      3204   -267     2783
  SINCE JUL 1   3766                      4460   -694     3756

 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    23   HIGHEST WIND DIRECTION     S (160)
  HIGHEST GUST SPEED    28   HIGHEST GUST DIRECTION    SE (150)
  AVERAGE WIND SPEED    12.4


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    92           700 AM
 LOWEST     44           300 PM
 AVERAGE    68

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   37        67      1930
 MINIMUM TEMPERATURE (F)   22       -11      1873


SUNRISE AND SUNSET
FEBRUARY 21 2017......SUNRISE   638 AM CST   SUNSET   532 PM CST
FEBRUARY 22 2017......SUNRISE   637 AM CST   SUNSET   534 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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