Climatological Report (Daily)
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000
CDUS43 KLOT 160632
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
132 AM CDT MON OCT 16 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 15 2017...

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)
 YESTERDAY
  MAXIMUM         68    342 AM  88    1947  63      5       70
  MINIMUM         47   1159 PM  28    1876  43      4       53
  AVERAGE         58                        53      5       62

PRECIPITATION (IN)
  YESTERDAY        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)
  YESTERDAY        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
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        7                        12     -5        3
  MONTH TO DATE   31                       154   -123       88
  SINCE SEP 1     68                       259   -191      111
  SINCE JUL 1     73                       272   -199      111

 COOLING
  YESTERDAY        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    15.7


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


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


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

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


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


SUNRISE AND SUNSET
OCTOBER 16 2017.......SUNRISE   705 AM CDT   SUNSET   608 PM CDT
OCTOBER 17 2017.......SUNRISE   707 AM CDT   SUNSET   606 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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