Climatological Report (Daily)
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CDUS43 KLOT 180635
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
134 AM CDT WED APR 18 2018


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR APRIL 17 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         43    529 PM  88    1976  60    -17       69
  MINIMUM         29    332 AM  17    1875  39    -10       44
  AVERAGE         36                        50    -14       57

PRECIPITATION (IN)
  YESTERDAY        0.00          2.01 2013   0.12  -0.12     0.00
  MONTH TO DATE    2.28                      1.87   0.41     2.79
  SINCE MAR 1      4.02                      4.37  -0.35     6.80
  SINCE JAN 1     10.20                      7.89   2.31    11.19

SNOWFALL (IN)
  YESTERDAY        0.0           0.5  1949   0.0    0.0      0.0
  MONTH TO DATE    2.7                       1.0    1.7      0.0
  SINCE MAR 1      5.3                       6.6   -1.3      7.8
  SINCE JUL 1     35.6                      36.1   -0.5     26.1
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       29                        16     13        8
  MONTH TO DATE  485                       318    167      202
  SINCE MAR 1   1352                      1159    193      987
  SINCE JUL 1   5810                      5893    -83     4912

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        9
  SINCE MAR 1      0                         1     -1        9
  SINCE JAN 1      0                         1     -1        9
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    22   HIGHEST WIND DIRECTION    NW (320)
  HIGHEST GUST SPEED    26   HIGHEST GUST DIRECTION    NW (300)
  AVERAGE WIND SPEED    11.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.5


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    69           400 AM
 LOWEST     41           600 PM
 AVERAGE    55

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   60        89      2002
 MINIMUM TEMPERATURE (F)   40        23      1983
                                             1875


SUNRISE AND SUNSET
APRIL 18 2018.........SUNRISE   606 AM CDT   SUNSET   736 PM CDT
APRIL 19 2018.........SUNRISE   605 AM CDT   SUNSET   737 PM CDT


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




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