Climatological Report (Daily)
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CDUS43 KLOT 220639
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
138 AM CDT WED MAY 22 2013


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR MAY 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         81    257 PM  92    1977  72      9       67
                                      1934
  MINIMUM         64    552 AM  31    2002  50     14       54
  AVERAGE         73                        61     12       61

PRECIPITATION (IN)
  YESTERDAY        0.56          1.16 1974   0.13   0.43     0.00
  MONTH TO DATE    2.28                      2.49  -0.21     3.26
  SINCE MAR 1     12.96                      8.37   4.59     7.59
  SINCE JAN 1     19.55                     11.89   7.66    11.09

SNOWFALL (IN)
  YESTERDAY        0.0           T    2004   0.0    0.0      0.0
                                      1969
  MONTH TO DATE    0.0                       0.0    0.0       T
  SINCE MAR 1     10.5                       6.8    3.7      0.3
  SINCE JUL 1     30.1                      36.3   -6.2     19.8
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        0                         6     -6        4
  MONTH TO DATE  128                       176    -48       82
  SINCE MAR 1   1664                      1509    155      899
  SINCE JUL 1   6066                      6243   -177     4872

 COOLING
  YESTERDAY        8                         2      6        0
  MONTH TO DATE   51                        22     29       51
  SINCE MAR 1     59                        32     27       94
  SINCE JAN 1     59                        32     27       94
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    25   HIGHEST WIND DIRECTION    SW (220)
  HIGHEST GUST SPEED    32   HIGHEST GUST DIRECTION    SW (210)
  AVERAGE WIND SPEED    12.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.7


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           200 AM
 LOWEST     54           200 PM
 AVERAGE    74

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   72        94      1925
 MINIMUM TEMPERATURE (F)   50        36      2006


SUNRISE AND SUNSET
MAY 22 2013...........SUNRISE   525 AM CDT   SUNSET   812 PM CDT
MAY 23 2013...........SUNRISE   524 AM CDT   SUNSET   813 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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