Climatological Report (Daily)
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000
CDUS43 KLOT 152142
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
441 PM CDT SUN OCT 15 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR OCTOBER 15 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         68    342 AM  88    1947  63      5       70
  MINIMUM         52   1255 PM  28    1876  43      9       53
  AVERAGE         60                        53      7       62

PRECIPITATION (IN)
  TODAY            0.20          1.66 1967   0.10   0.10      T
  MONTH TO DATE    6.73                      1.50   5.23     1.36
  SINCE SEP 1      7.05                      4.71   2.34     3.12
  SINCE JAN 1     38.79                     29.84   8.95    30.10

SNOWFALL (IN)
  TODAY            0.0           0.0    MM   0.0    0.0      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            5                        12     -7        3
  MONTH TO DATE   29                       154   -125       88
  SINCE SEP 1     66                       259   -193      111
  SINCE JUL 1     71                       272   -201      111

 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    30   HIGHEST WIND DIRECTION     W (290)
  HIGHEST GUST SPEED    38   HIGHEST GUST DIRECTION     W (290)
  AVERAGE WIND SPEED    19.9


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           400 AM
 LOWEST     59           300 PM
 AVERAGE    76

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   62        87      1963
 MINIMUM TEMPERATURE (F)   43        28      1991


SUNRISE AND SUNSET
OCTOBER 15 2017.......SUNRISE   704 AM CDT   SUNSET   610 PM CDT
OCTOBER 16 2017.......SUNRISE   706 AM CDT   SUNSET   608 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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