Climatological Report (Daily)
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000
CDUS43 KLOT 212138
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
438 PM CDT SUN MAY 21 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR MAY 21 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         65    406 AM  92    1977  72     -7       75
                                      1934
  MINIMUM         58    259 PM  31    2002  50      8       53
  AVERAGE         62                        61      1       64

PRECIPITATION (IN)
  TODAY            0.05          1.16 1974   0.13  -0.08     0.00
  MONTH TO DATE    2.24                      2.49  -0.25     3.66
  SINCE MAR 1     12.68                      8.37   4.31     9.80
  SINCE JAN 1     17.07                     11.89   5.18    11.87

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

DEGREE DAYS
 HEATING
  TODAY            3                         6     -3        1
  MONTH TO DATE  204                       176     28      225
  SINCE MAR 1   1328                      1509   -181     1407
  SINCE JUL 1   5253                      6243   -990     5415

 COOLING
  TODAY            0                         2     -2        0
  MONTH TO DATE   18                        22     -4        0
  SINCE MAR 1     30                        32     -2        7
  SINCE JAN 1     30                        32     -2        7
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    23   HIGHEST WIND DIRECTION    SW (240)
  HIGHEST GUST SPEED    29   HIGHEST GUST DIRECTION     W (250)
  AVERAGE WIND SPEED    12.5


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.8


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  THUNDERSTORM
  LIGHT RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    97          1200 AM
 LOWEST     52          1100 AM
 AVERAGE    75

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


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 2017...........SUNRISE   526 AM CDT   SUNSET   811 PM CDT
MAY 22 2017...........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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