Climatological Report (Daily)
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CDUS43 KLOT 200636
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
136 AM CDT THU JUL 20 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR JULY 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         88   1251 PM 101    1930  84      4       91
  MINIMUM         70   1159 PM  50    1873  64      6       68
  AVERAGE         79                        74      5       80

PRECIPITATION (IN)
  YESTERDAY        0.48          1.96 1963   0.11   0.37     0.00
  MONTH TO DATE    3.58                      2.11   1.47     2.37
  SINCE JUN 1      7.02                      5.56   1.46     5.22
  SINCE JAN 1     25.13                     18.64   6.49    18.86

SNOWFALL (IN)
  YESTERDAY        0.0           0.0    MM   0.0    0.0      0.0
  MONTH TO DATE    T                         0.0    0.0      0.0
  SINCE JUN 1      T                         0.0    0.0      0.0
  SINCE JUL 1      T                         0.0    0.0      0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE JUN 1      3                        48    -45       13
  SINCE JUL 1      0                         0      0        0

 COOLING
  YESTERDAY       14                         9      5       15
  MONTH TO DATE  179                       170      9      169
  SINCE JUN 1    409                       335     74      385
  SINCE JAN 1    442                       389     53      459
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    35   HIGHEST WIND DIRECTION    NW (320)
  HIGHEST GUST SPEED    43   HIGHEST GUST DIRECTION    NW (320)
  AVERAGE WIND SPEED     7.5


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.6


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    90          1000 PM
 LOWEST     57           200 PM
 AVERAGE    74

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   84       101      1980
 MINIMUM TEMPERATURE (F)   64        53      1970


SUNRISE AND SUNSET
JULY 20 2017..........SUNRISE   534 AM CDT   SUNSET   821 PM CDT
JULY 21 2017..........SUNRISE   535 AM CDT   SUNSET   821 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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