Climatological Report (Daily)
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273
CDUS43 KLOT 092134
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
433 PM CDT SAT SEP 9 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR SEPTEMBER 9 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         72   1245 PM  95    1983  78     -6       81
                                      1959
                                      1955
  MINIMUM         56    557 AM  43    1986  57     -1       63
  AVERAGE         64                        67     -3       72

PRECIPITATION (IN)
  TODAY            0.00          3.44 1875   0.11  -0.11      T
  MONTH TO DATE    0.25                      1.03  -0.78     0.44
  SINCE SEP 1      0.25                      1.03  -0.78     0.44
  SINCE JAN 1     31.99                     26.16   5.83    27.42

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                         2     -1        0
  MONTH TO DATE   22                        11     11        0
  SINCE SEP 1     22                        11     11        0
  SINCE JUL 1     27                        24      3        0

 COOLING
  TODAY            0                         4     -4        7
  MONTH TO DATE   13                        45    -32       75
  SINCE SEP 1     13                        45    -32       75
  SINCE JAN 1    796                       785     11     1040
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION     E (70)
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION    NE (60)
  AVERAGE WIND SPEED     9.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.3


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    78           700 AM
 LOWEST     35           100 PM
 AVERAGE    57

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   77        95      2013
                                             1983
 MINIMUM TEMPERATURE (F)   57        44      1943


SUNRISE AND SUNSET
SEPTEMBER  9 2017.....SUNRISE   626 AM CDT   SUNSET   711 PM CDT
SEPTEMBER 10 2017.....SUNRISE   627 AM CDT   SUNSET   709 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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