Climatological Report (Daily)
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000
CDUS43 KLOT 102139
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
434 PM CDT SUN SEP 10 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR SEPTEMBER 10 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         70    259 PM  95    2013  77     -7       73
                                      1983
  MINIMUM         50    602 AM  44    1943  57     -7       59
  AVERAGE         60                        67     -7       66

PRECIPITATION (IN)
  TODAY            0.00          2.48 1922   0.10  -0.10     0.01
  MONTH TO DATE    0.25                      1.13  -0.88     0.45
  SINCE SEP 1      0.25                      1.13  -0.88     0.45
  SINCE JAN 1     31.99                     26.26   5.73    27.43

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            5                         2      3        0
  MONTH TO DATE   28                        13     15        0
  SINCE SEP 1     28                        13     15        0
  SINCE JUL 1     33                        26      7        0

 COOLING
  TODAY            0                         4     -4        1
  MONTH TO DATE   13                        49    -36       76
  SINCE SEP 1     13                        49    -36       76
  SINCE JAN 1    796                       789      7     1041
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION     E (80)
  HIGHEST GUST SPEED    20   HIGHEST GUST DIRECTION     E (100)
  AVERAGE WIND SPEED     6.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.1


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    77          1200 AM
 LOWEST     37          1200 PM
 AVERAGE    57

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   77        95      1952
 MINIMUM TEMPERATURE (F)   56        42      1993


SUNRISE AND SUNSET
SEPTEMBER 10 2017.....SUNRISE   627 AM CDT   SUNSET   709 PM CDT
SEPTEMBER 11 2017.....SUNRISE   628 AM CDT   SUNSET   708 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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