Climatological Report (Daily)
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CDUS43 KLOT 012136
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
434 PM CDT FRI SEP 1 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR SEPTEMBER 1 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         69    205 PM 101    1953  80    -11       73
  MINIMUM         58    608 AM  45    1949  60     -2       62
  AVERAGE         64                        70     -6       68

PRECIPITATION (IN)
  TODAY            0.00          2.92 1977   0.12  -0.12      T
  MONTH TO DATE    0.00                      0.12  -0.12      T
  SINCE SEP 1      0.00                      0.12  -0.12      T
  SINCE JAN 1     31.74                     25.25   6.49    26.98

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 SEP 1      0.0                       0.0    0.0      0.0
  SINCE JUL 1      T                         0.0    0.0      0.0

DEGREE DAYS
 HEATING
  TODAY            1                         1      0        0
  MONTH TO DATE    1                         1      0        0
  SINCE SEP 1      1                         1      0        0
  SINCE JUL 1      6                        14     -8        0

 COOLING
  TODAY            0                         6     -6        3
  MONTH TO DATE    0                         6     -6        3
  SINCE SEP 1      0                         6     -6        3
  SINCE JAN 1    783                       746     37      968
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    22   HIGHEST WIND DIRECTION     E (70)
  HIGHEST GUST SPEED    27   HIGHEST GUST DIRECTION     E (80)
  AVERAGE WIND SPEED    13.7


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.6


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    69           400 AM
 LOWEST     42          1200 PM
 AVERAGE    56

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   80       101      1953
 MINIMUM TEMPERATURE (F)   60        44      1946


SUNRISE AND SUNSET
SEPTEMBER  1 2017.....SUNRISE   618 AM CDT   SUNSET   725 PM CDT
SEPTEMBER  2 2017.....SUNRISE   619 AM CDT   SUNSET   723 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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