Climatological Report (Daily)
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CDUS43 KLOT 122134
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
433 PM CDT THU OCT 12 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR OCTOBER 12 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         60    249 PM  84    2008  64     -4       69
                                      1960
                                      1956
  MINIMUM         56    120 AM  28    1988  44     12       45
                                      1987
  AVERAGE         58                        54      4       57

PRECIPITATION (IN)
  TODAY            T             1.40 1973   0.10  -0.10     0.14
  MONTH TO DATE    2.34                      1.20   1.14     1.36
  SINCE SEP 1      2.66                      4.41  -1.75     3.12
  SINCE JAN 1     34.40                     29.54   4.86    30.10

SNOWFALL (IN)
  TODAY            0.0           0.3  2006   0.1   -0.1      0.0
  MONTH TO DATE    0.0                       0.1   -0.1      0.0
  SINCE SEP 1      0.0                       0.1   -0.1      0.0
  SINCE JUL 1      T                         0.1   -0.1      0.0

DEGREE DAYS
 HEATING
  TODAY            7                        12     -5        8
  MONTH TO DATE   22                       118    -96       55
  SINCE SEP 1     59                       223   -164       78
  SINCE JUL 1     64                       236   -172       78

 COOLING
  TODAY            0                         0      0        0
  MONTH TO DATE   25                        10     15        9
  SINCE SEP 1    204                       102    102      174
  SINCE JAN 1    987                       842    145     1139
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    12   HIGHEST WIND DIRECTION    SE (140)
  HIGHEST GUST SPEED    14   HIGHEST GUST DIRECTION     S (160)
  AVERAGE WIND SPEED     6.6


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  LIGHT RAIN
  FOG
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    86           200 AM
 LOWEST     72           100 PM
 AVERAGE    79

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   64        88      1975
 MINIMUM TEMPERATURE (F)   44        25      1988


SUNRISE AND SUNSET
OCTOBER 12 2017.......SUNRISE   701 AM CDT   SUNSET   614 PM CDT
OCTOBER 13 2017.......SUNRISE   702 AM CDT   SUNSET   613 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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