Climatological Report (Daily)
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000
CDUS43 KLOT 210642
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
140 AM CDT SUN SEP 21 2014


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 20 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2014


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         77    543 PM  91    1931  73      4       76
                                      1895
  MINIMUM         63    636 AM  36    1991  52     11       58
  AVERAGE         70                        63      7       67

PRECIPITATION (IN)
  YESTERDAY        0.12          1.33 2001   0.11   0.01      T
  MONTH TO DATE    2.70                      2.18   0.52     2.19
  SINCE SEP 1      2.70                      2.18   0.52     2.19
  SINCE JAN 1     34.78                     27.31   7.47    34.56

SNOWFALL (IN)
  YESTERDAY        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      0.0                       0.0    0.0      0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        0                         4     -4        0
  MONTH TO DATE   79                        44     35       28
  SINCE SEP 1     79                        44     35       28
  SINCE JUL 1     84                        57     27       39

 COOLING
  YESTERDAY        5                         2      3        2
  MONTH TO DATE   74                        78     -4      136
  SINCE SEP 1     74                        78     -4      136
  SINCE JAN 1    789                       818    -29      901
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    28   HIGHEST WIND DIRECTION     W (250)
  HIGHEST GUST SPEED    39   HIGHEST GUST DIRECTION     W (260)
  AVERAGE WIND SPEED    10.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.6


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    90          1000 PM
 LOWEST     56          1200 AM
 AVERAGE    73

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   73        92      1970
 MINIMUM TEMPERATURE (F)   52        39      1991
                                             1983
                                             1889


SUNRISE AND SUNSET
SEPTEMBER 21 2014.....SUNRISE   638 AM CDT   SUNSET   651 PM CDT
SEPTEMBER 22 2014.....SUNRISE   639 AM CDT   SUNSET   649 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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