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Climatological Report (Daily)
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CDUS43 KLOT 180653
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
153 AM CDT SAT MAY 18 2013


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR MAY 17 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         70   1018 AM  94    1962  70      0       74
  MINIMUM         55    348 AM  36    2002  49      6       45
                                      1973
  AVERAGE         63                        59      4       60

PRECIPITATION (IN)
  YESTERDAY        T             1.38 1986   0.12  -0.12     0.00
                                      1969
  MONTH TO DATE    0.63                      1.99  -1.36     3.12
  SINCE MAR 1     11.31                      7.87   3.44     7.45
  SINCE JAN 1     17.90                     11.39   6.51    10.95

SNOWFALL (IN)
  YESTERDAY        0.0           0.0    MM   0.0    0.0      0.0
  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        2                         7     -5        5
  MONTH TO DATE  128                       151    -23       78
  SINCE MAR 1   1664                      1484    180      895
  SINCE JUL 1   6066                      6218   -152     4868

 COOLING
  YESTERDAY        0                         1     -1        0
  MONTH TO DATE   21                        15      6       22
  SINCE MAR 1     29                        25      4       65
  SINCE JAN 1     29                        25      4       65
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    16   HIGHEST WIND DIRECTION    NE (40)
  HIGHEST GUST SPEED    24   HIGHEST GUST DIRECTION    NE (60)
  AVERAGE WIND SPEED     6.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    62           600 AM
 LOWEST     48           200 PM
 AVERAGE    55

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THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   71        93      1962
 MINIMUM TEMPERATURE (F)   49        34      2002


SUNRISE AND SUNSET
MAY 18 2013...........SUNRISE   528 AM CDT   SUNSET   809 PM CDT
MAY 19 2013...........SUNRISE   527 AM CDT   SUNSET   809 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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