Climatological Report (Daily)
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CDUS43 KLOT 170633
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
132 AM CDT WED MAY 17 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR MAY 16 2017...

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)
 YESTERDAY
  MAXIMUM         87    356 PM  94    1962  70     17       70
  MINIMUM         61    932 AM  33    1997  48     13       46
  AVERAGE         74                        59     15       58

PRECIPITATION (IN)
  YESTERDAY        0.00          1.38 1974   0.12  -0.12      T
  MONTH TO DATE    1.25                      1.87  -0.62     3.66
  SINCE MAR 1     11.69                      7.75   3.94     9.80
  SINCE JAN 1     16.08                     11.27   4.81    11.87

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      7.8                       6.8    1.0      3.7
  SINCE JUL 1     26.1                      36.3  -10.2     31.2
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        0                         7     -7        7
  MONTH TO DATE  172                       144     28      178
  SINCE MAR 1   1296                      1477   -181     1360
  SINCE JUL 1   5221                      6211   -990     5368

 COOLING
  YESTERDAY        9                         1      8        0
  MONTH TO DATE   10                        14     -4        0
  SINCE MAR 1     22                        24     -2        7
  SINCE JAN 1     22                        24     -2        7
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    29   HIGHEST WIND DIRECTION     S (190)
  HIGHEST GUST SPEED    37   HIGHEST GUST DIRECTION     S (200)
  AVERAGE WIND SPEED    14.5


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.5


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    84           100 AM
 LOWEST     29           400 PM
 AVERAGE    57

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   70        94      1962
 MINIMUM TEMPERATURE (F)   49        36      2002
                                             1973


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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