Climatological Report (Daily)
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000
CDUS43 KLOT 150649
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
147 AM CDT SUN OCT 15 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 14 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         66   1159 PM  89    1975  63      3       66
  MINIMUM         62   1225 PM  27    1872  43     19       38
  AVERAGE         64                        53     11       52

PRECIPITATION (IN)
  YESTERDAY        4.19R         1.15 2003   0.10   4.09     0.00
                                      1881
  MONTH TO DATE    6.53                      1.40   5.13     1.36
  SINCE SEP 1      6.85                      4.61   2.24     3.12
  SINCE JAN 1     38.59                     29.74   8.85    30.10

SNOWFALL (IN)
  YESTERDAY        0.0           T    1986   0.0    0.0      0.0
                                      1898
  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        1                        12    -11       13
  MONTH TO DATE   24                       142   -118       85
  SINCE SEP 1     61                       247   -186      108
  SINCE JUL 1     66                       260   -194      108

 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    38   HIGHEST WIND DIRECTION    NW (320)
  HIGHEST GUST SPEED    45   HIGHEST GUST DIRECTION    NW (310)
  AVERAGE WIND SPEED     8.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           300 AM
 LOWEST     78          1200 AM
 AVERAGE    86

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   63        88      1947
 MINIMUM TEMPERATURE (F)   43        28      1876


SUNRISE AND SUNSET
OCTOBER 15 2017.......SUNRISE   704 AM CDT   SUNSET   610 PM CDT
OCTOBER 16 2017.......SUNRISE   705 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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