Climatological Report (Daily)
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000
CDUS43 KLOT 210644
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1243 AM CST WED FEB 21 2018


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR FEBRUARY 20 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         66   1259 PM  70    2017  37     29       70
  MINIMUM         34   1159 PM  -9    1896  22     12       41
  AVERAGE         50                        29     21       56

PRECIPITATION (IN)
  YESTERDAY        2.10R         1.16 2014   0.07   2.03     0.00
  MONTH TO DATE    4.37                      1.18   3.19     0.47
  SINCE DEC 1      6.50                      5.16   1.34     5.11
  SINCE JAN 1      5.91                      2.91   3.00     3.34

SNOWFALL (IN)
  YESTERDAY        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
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       15                        36    -21        9
  MONTH TO DATE  814                       770     44      589
  SINCE DEC 1   3224                      3204     20     2937
  SINCE JUL 1   4267                      4460   -193     3766

 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    25   HIGHEST WIND DIRECTION     S (190)
  HIGHEST GUST SPEED    33   HIGHEST GUST DIRECTION     S (200)
  AVERAGE WIND SPEED    13.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


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


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

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


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 2018......SUNRISE   639 AM CST   SUNSET   532 PM CST
FEBRUARY 22 2018......SUNRISE   637 AM CST   SUNSET   533 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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