Climatological Report (Daily)
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000
CDUS43 KLOT 170635
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1233 AM CST SAT FEB 17 2018


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR FEBRUARY 16 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2018


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         37   1206 AM  58    1921  36      1       41
  MINIMUM         20   1159 PM -10    1885  20      0       30
  AVERAGE         29                        28      1       36

PRECIPITATION (IN)
  YESTERDAY        0.00          1.94 1883   0.07  -0.07     0.00
  MONTH TO DATE    1.62                      0.91   0.71     0.47
  SINCE DEC 1      3.75                      4.89  -1.14     5.11
  SINCE JAN 1      3.16                      2.64   0.52     3.34

SNOWFALL (IN)
  YESTERDAY        0.0           6.0  1997   0.3   -0.3      0.0
  MONTH TO DATE   18.3                       5.5   12.8       T
  SINCE DEC 1     28.2                      24.5    3.7     18.3
  SINCE JUL 1     28.3                      25.9    2.4     18.3
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       36                        37     -1       29
  MONTH TO DATE  706                       625     81      539
  SINCE DEC 1   3116                      3059     57     2887
  SINCE JUL 1   4159                      4315   -156     3716

 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     N (340)
  HIGHEST GUST SPEED    27   HIGHEST GUST DIRECTION     N (340)
  AVERAGE WIND SPEED    10.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.6


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    82           100 AM
 LOWEST     39           400 PM
 AVERAGE    61

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   36        67      2017
 MINIMUM TEMPERATURE (F)   21       -11      1903


SUNRISE AND SUNSET
FEBRUARY 17 2018......SUNRISE   645 AM CST   SUNSET   527 PM CST
FEBRUARY 18 2018......SUNRISE   643 AM CST   SUNSET   528 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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