Climatological Report (Daily)
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000
CDUS43 KLOT 182135
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
435 PM CDT FRI AUG 18 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR AUGUST 18 2017...
VALID TODAY AS OF 0400 PM LOCAL TIME.

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)
 TODAY
  MAXIMUM         82    259 PM  98    1947  82      0       85
  MINIMUM         67    558 AM  49    1963  63      4       70
  AVERAGE         75                        72      3       78

PRECIPITATION (IN)
  TODAY            0.00          2.85 1990   0.17  -0.17     0.75
  MONTH TO DATE    2.02                      2.98  -0.96     1.80
  SINCE JUN 1     13.14                     10.13   3.01    10.88
  SINCE JAN 1     31.25                     23.21   8.04    24.52

SNOWFALL (IN)
  TODAY            0.0           0.0    MM   0.0    0.0      0.0
  MONTH TO DATE    0.0                       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

DEGREE DAYS
 HEATING
  TODAY            0                         0      0        0
  MONTH TO DATE    3                         0      3        0
  SINCE JUN 1      6                        52    -46       13
  SINCE JUL 1      3                         4     -1        0

 COOLING
  TODAY           10                         8      2       13
  MONTH TO DATE  136                       151    -15      231
  SINCE JUN 1    672                       599     73      779
  SINCE JAN 1    705                       653     52      853
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    20   HIGHEST WIND DIRECTION    NW (320)
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION    NW (320)
  AVERAGE WIND SPEED    11.7


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.5


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    87           500 AM
 LOWEST     46           300 PM
 AVERAGE    67

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   82        99      1983
                                             1947
 MINIMUM TEMPERATURE (F)   63        51      1992


SUNRISE AND SUNSET
AUGUST 18 2017........SUNRISE   603 AM CDT   SUNSET   747 PM CDT
AUGUST 19 2017........SUNRISE   604 AM CDT   SUNSET   745 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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