Climatological Report (Daily)
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000
CDUS43 KLOT 172136
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
435 PM CDT WED MAY 17 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR MAY 17 2017...
VALID TODAY AS OF 0400 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         84    249 PM  94    1962  70     14       57
  MINIMUM         70    529 AM  36    2002  49     21       44
                                      1973
  AVERAGE         77                        59     18       51

PRECIPITATION (IN)
  TODAY            0.00          1.38 1986   0.12  -0.12      T
                                      1969
  MONTH TO DATE    1.25                      1.99  -0.74     3.66
  SINCE MAR 1     11.69                      7.87   3.82     9.80
  SINCE JAN 1     16.08                     11.39   4.69    11.87

SNOWFALL (IN)
  TODAY            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      7.8                       6.8    1.0      3.7
  SINCE JUL 1     26.1                      36.3  -10.2     31.2

DEGREE DAYS
 HEATING
  TODAY            0                         7     -7       14
  MONTH TO DATE  172                       151     21      192
  SINCE MAR 1   1296                      1484   -188     1374
  SINCE JUL 1   5221                      6218   -997     5382

 COOLING
  TODAY           12                         1     11        0
  MONTH TO DATE   22                        15      7        0
  SINCE MAR 1     34                        25      9        7
  SINCE JAN 1     34                        25      9        7
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    33   HIGHEST WIND DIRECTION     S (170)
  HIGHEST GUST SPEED    45   HIGHEST GUST DIRECTION     S (180)
  AVERAGE WIND SPEED    17.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.8


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    68           500 AM
 LOWEST     43           300 PM
 AVERAGE    56

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


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


SUNRISE AND SUNSET
MAY 17 2017...........SUNRISE   529 AM CDT   SUNSET   808 PM CDT
MAY 18 2017...........SUNRISE   528 AM CDT   SUNSET   808 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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