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Archives for the SPC Convective Outlook are updated daily (approximately) with a live map at the beginning of each article. Follow the link at the end of the article to check for current updates on the NOAA/NWS Storm Prediction Center website. Also, see Archives for Chicago's hourly weather data on CARDINAL NEWS Magazine.

ARLINGTON HEIGHTS WEATHER

Saturday, December 21, 2013

Chicago Weather O'Hare Data December 21 2013

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 21 2013...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2013


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         35    912 PM  62    1967  33      2       33
  MINIMUM         30    817 AM -14    1989  19     11       20
  AVERAGE         33                        26      7       27

PRECIPITATION (IN)
  YESTERDAY        0.24          1.81 1949   0.07   0.17     0.01
  MONTH TO DATE    1.31                      1.65  -0.34     2.19
  SINCE DEC 1      1.31                      1.65  -0.34     2.19
  SINCE JAN 1     41.46                     36.29   5.17    26.89

SNOWFALL (IN)
  YESTERDAY        0.0           3.6  1983   0.3   -0.3      0.1
  MONTH TO DATE    9.3                       5.2    4.1      0.3
  SINCE DEC 1      9.3                       5.2    4.1      0.3
  SINCE JUL 1     10.2                       6.7    3.5      0.3
  SNOW DEPTH       1

DEGREE DAYS
 HEATING
  YESTERDAY       32                        39     -7       38
  MONTH TO DATE  843                       756     87      521
  SINCE DEC 1    843                       756     87      521
  SINCE JUL 1   2126                      2012    114     1771

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1    933                       843     90     1324
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    23   HIGHEST WIND DIRECTION    NE (50)
  HIGHEST GUST SPEED    34   HIGHEST GUST DIRECTION    NE (50)
  AVERAGE WIND SPEED     8.6


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN
  FOG
  FOG W/VISIBILITY <= 1/4 MILE
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           600 PM
 LOWEST     82          1200 AM
 AVERAGE    91

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   33        57      1957
                                             1875
 MINIMUM TEMPERATURE (F)   19       -21      1872


SUNRISE AND SUNSET
DECEMBER 22 2013......SUNRISE   717 AM CST   SUNSET   424 PM CST
DECEMBER 23 2013......SUNRISE   717 AM CST   SUNSET   424 PM CST


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.


000
CDUS43 KLOT 220635
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1234 AM CST SUN DEC 22 2013

CHICAGO O'HARE CURRENT AND HISTORY (3-DAY) ...


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