Climatological Report (Daily)
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000
CDUS43 KLOT 200715
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
215 AM CDT THU APR 20 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR APRIL 19 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         70    109 AM  86    1985  61      9       57
  MINIMUM         45    917 PM  22    1983  40      5       46
  AVERAGE         58                        50      8       52

PRECIPITATION (IN)
  YESTERDAY        0.01          1.52 1970   0.12  -0.11     0.00
  MONTH TO DATE    2.80                      2.10   0.70     0.69
  SINCE MAR 1      6.81                      4.60   2.21     4.03
  SINCE JAN 1     11.20                      8.12   3.08     6.10

SNOWFALL (IN)
  YESTERDAY        0.0           2.0  1888   0.0    0.0      0.0
  MONTH TO DATE    0.0                       1.1   -1.1      1.1
  SINCE MAR 1      7.8                       6.7    1.1      3.7
  SINCE JUL 1     26.1                      36.2  -10.1     31.2
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        7                        15     -8       13
  MONTH TO DATE  215                       349   -134      383
  SINCE MAR 1   1000                      1190   -190     1048
  SINCE JUL 1   4925                      5924   -999     5056

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    9                         0      9        1
  SINCE MAR 1      9                         1      8        1
  SINCE JAN 1      9                         1      8        1
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    20   HIGHEST WIND DIRECTION    NE (60)
  HIGHEST GUST SPEED    24   HIGHEST GUST DIRECTION    NE (50)
  AVERAGE WIND SPEED     9.6


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    78           500 AM
 LOWEST     61          1200 AM
 AVERAGE    70

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   61        87      1985
 MINIMUM TEMPERATURE (F)   40        24      1897


SUNRISE AND SUNSET
APRIL 20 2017.........SUNRISE   603 AM CDT   SUNSET   739 PM CDT
APRIL 21 2017.........SUNRISE   602 AM CDT   SUNSET   740 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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