Climatological Report (Daily)
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000
CDUS43 KLOT 200631
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
131 AM CDT WED MAY 20 2015


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR MAY 19 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         53    227 PM  94    1977  71    -18       69
                                      1975
  MINIMUM         40   1117 PM  36    1993  49     -9       45
                                      1894
  AVERAGE         47                        60    -13       57

PRECIPITATION (IN)
  YESTERDAY        0.00          1.53 1949   0.12  -0.12      T
  MONTH TO DATE    3.08                      2.24   0.84     3.91
  SINCE MAR 1      7.05                      8.12  -1.07     8.46
  SINCE JAN 1      9.91                     11.64  -1.73    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       18                         6     12        8
  MONTH TO DATE  125                       164    -39      181
  SINCE MAR 1   1495                      1497     -2     1694
  SINCE JUL 1   6675                      6231    444     7109

 COOLING
  YESTERDAY        0                         2     -2        0
  MONTH TO DATE   29                        18     11       16
  SINCE MAR 1     29                        28      1       17
  SINCE JAN 1     29                        28      1       17
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    18   HIGHEST WIND DIRECTION    NW (310)
  HIGHEST GUST SPEED    24   HIGHEST GUST DIRECTION    NW (310)
  AVERAGE WIND SPEED    10.4


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    71           700 AM
 LOWEST     54           100 PM
 AVERAGE    63

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   71        95      1977
 MINIMUM TEMPERATURE (F)   49        33      2002


SUNRISE AND SUNSET
MAY 20 2015...........SUNRISE   527 AM CDT   SUNSET   810 PM CDT
MAY 21 2015...........SUNRISE   526 AM CDT   SUNSET   811 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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