Climatological Report (Daily)
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CDUS43 KLOT 210636
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
135 AM CDT SAT APR 21 2018


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR APRIL 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         61    300 PM  87    1985  61      0       73
  MINIMUM         31    524 AM  24    1897  40     -9       48
  AVERAGE         46                        51     -5       61

PRECIPITATION (IN)
  YESTERDAY        0.00          2.37 2000   0.11  -0.11      T
  MONTH TO DATE    2.70                      2.21   0.49     2.80
  SINCE MAR 1      4.44                      4.71  -0.27     6.81
  SINCE JAN 1     10.62                      8.23   2.39    11.20

SNOWFALL (IN)
  YESTERDAY        0.0           0.2  1943   0.0    0.0      0.0
  MONTH TO DATE    3.2                       1.1    2.1      0.0
  SINCE MAR 1      5.8                       6.7   -0.9      7.8
  SINCE JUL 1     36.1                      36.2   -0.1     26.1
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       19                        15      4        4
  MONTH TO DATE  557                       364    193      219
  SINCE MAR 1   1424                      1205    219     1004
  SINCE JUL 1   5882                      5939    -57     4929

 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    15   HIGHEST WIND DIRECTION     E (90)
  HIGHEST GUST SPEED    19   HIGHEST GUST DIRECTION     E (100)
  AVERAGE WIND SPEED     4.9


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.4


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    59           500 AM
 LOWEST     16           500 PM
 AVERAGE    38

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   61        88      1985
 MINIMUM TEMPERATURE (F)   41        27      1986


SUNRISE AND SUNSET
APRIL 21 2018.........SUNRISE   602 AM CDT   SUNSET   739 PM CDT
APRIL 22 2018.........SUNRISE   600 AM CDT   SUNSET   741 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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