Climatological Report (Daily)
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000
CDUS43 KLOT 202233
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
433 PM CST TUE FEB 20 2018


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR FEBRUARY 20 2018...
VALID TODAY AS OF 0400 PM LOCAL TIME.

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)
 TODAY
  MAXIMUM         66   1259 PM  70    2017  37     29       70
  MINIMUM         53    359 PM  -9    1896  22     31       41
  AVERAGE         60                        29     31       56

PRECIPITATION (IN)
  TODAY            1.78R         1.16 2014   0.07   1.71     0.00
  MONTH TO DATE    4.05                      1.18   2.87     0.47
  SINCE DEC 1      6.18                      5.16   1.02     5.11
  SINCE JAN 1      5.59                      2.91   2.68     3.34

SNOWFALL (IN)
  TODAY            0.0           2.8  1989   0.3   -0.3      0.0
  MONTH TO DATE   20.3                       6.8   13.5       T
  SINCE DEC 1     30.2                      25.8    4.4     18.3
  SINCE JUL 1     30.3                      27.2    3.1     18.3

DEGREE DAYS
 HEATING
  TODAY            5                        36    -31        9
  MONTH TO DATE  804                       770     34      589
  SINCE DEC 1   3214                      3204     10     2937
  SINCE JUL 1   4257                      4460   -203     3766

 COOLING
  TODAY            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    25   HIGHEST WIND DIRECTION     S (190)
  HIGHEST GUST SPEED    33   HIGHEST GUST DIRECTION     S (200)
  AVERAGE WIND SPEED    13.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  THUNDERSTORM
  HEAVY RAIN
  RAIN
  LIGHT RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           700 AM
 LOWEST     78          1100 AM
 AVERAGE    89

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


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


SUNRISE AND SUNSET
FEBRUARY 20 2018......SUNRISE   640 AM CST   SUNSET   531 PM CST
FEBRUARY 21 2018......SUNRISE   639 AM CST   SUNSET   532 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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