Climatological Report (Daily)
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CDUS43 KLOT 212135
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
433 PM CDT THU MAY 21 2015


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR MAY 21 2015...
VALID TODAY AS OF 0400 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2015


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         68    258 PM  92    1977  72     -4       86
                                      1934
  MINIMUM         45    513 AM  31    2002  50     -5       63
  AVERAGE         57                        61     -4       75

PRECIPITATION (IN)
  TODAY            0.00          1.16 1974   0.13  -0.13     0.01
  MONTH TO DATE    3.12                      2.49   0.63     4.74
  SINCE MAR 1      7.09                      8.37  -1.28     9.29
  SINCE JAN 1      9.95                     11.89  -1.94    14.59

SNOWFALL (IN)
  TODAY            0.0           T    2004   0.0    0.0      0.0
                                      1969
  MONTH TO DATE    0.0                       0.0    0.0      0.0
  SINCE MAR 1      7.1                       6.8    0.3     13.7
  SINCE JUL 1     50.7                      36.6   14.1     82.0

DEGREE DAYS
 HEATING
  TODAY            8                         6      2        0
  MONTH TO DATE  154                       176    -22      181
  SINCE MAR 1   1524                      1509     15     1694
  SINCE JUL 1   6704                      6243    461     7109

 COOLING
  TODAY            0                         2     -2       10
  MONTH TO DATE   29                        22      7       35
  SINCE MAR 1     29                        32     -3       36
  SINCE JAN 1     29                        32     -3       36
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    18   HIGHEST WIND DIRECTION     W (290)
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION    NW (320)
  AVERAGE WIND SPEED    10.5


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.7


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    76          1200 AM
 LOWEST     30           300 PM
 AVERAGE    53

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


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


SUNRISE AND SUNSET
MAY 21 2015...........SUNRISE   526 AM CDT   SUNSET   811 PM CDT
MAY 22 2015...........SUNRISE   525 AM CDT   SUNSET   812 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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