Climatological Report (Daily)
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CDUS43 KLOT 180643
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
143 AM CDT MON MAY 18 2015


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR MAY 17 2015...

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)
 YESTERDAY
  MAXIMUM         82    216 PM  94    1962  70     12       60
  MINIMUM         66    317 AM  36    2002  49     17       39
                                      1973
  AVERAGE         74                        59     15       50

PRECIPITATION (IN)
  YESTERDAY        T             1.38 1986   0.12  -0.12     0.00
                                      1969
  MONTH TO DATE    3.08                      1.99   1.09     3.91
  SINCE MAR 1      7.05                      7.87  -0.82     8.46
  SINCE JAN 1      9.91                     11.39  -1.48    13.76

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 MAR 1      7.1                       6.8    0.3     13.7
  SINCE JUL 1     50.7                      36.6   14.1     82.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        0                         7     -7       15
  MONTH TO DATE  105                       151    -46      166
  SINCE MAR 1   1475                      1484     -9     1679
  SINCE JUL 1   6655                      6218    437     7094

 COOLING
  YESTERDAY        9                         1      8        0
  MONTH TO DATE   29                        15     14       16
  SINCE MAR 1     29                        25      4       17
  SINCE JAN 1     29                        25      4       17
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    28   HIGHEST WIND DIRECTION     S (190)
  HIGHEST GUST SPEED    36   HIGHEST GUST DIRECTION     S (160)
  AVERAGE WIND SPEED    15.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN
  FOG
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           500 AM
 LOWEST     54           500 PM
 AVERAGE    74

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


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 2015...........SUNRISE   529 AM CDT   SUNSET   808 PM CDT
MAY 19 2015...........SUNRISE   528 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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