Climatological Report (Daily)
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CDUS43 KLOT 302133
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
432 PM CDT SUN APR 30 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR APRIL 30 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         47   1207 PM  91    1942  65    -18       48
  MINIMUM         42    519 AM  30    1873  44     -2       43
  AVERAGE         45                        54     -9       46

PRECIPITATION (IN)
  TODAY            0.28          2.22 2003   0.12   0.16     0.61
  MONTH TO DATE    5.39                      3.38   2.01     2.80
  SINCE MAR 1      9.40                      5.88   3.52     6.14
  SINCE JAN 1     13.79                      9.40   4.39     8.21

SNOWFALL (IN)
  TODAY            0.0           0.1  1907   0.0    0.0      0.0
  MONTH TO DATE    0.0                       1.2   -1.2      1.1
  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           20                        11      9       19
  MONTH TO DATE  339                       493   -154      517
  SINCE MAR 1   1124                      1333   -209     1182
  SINCE JUL 1   5049                      6067  -1018     5190

 COOLING
  TODAY            0                         0      0        0
  MONTH TO DATE   12                         9      3        7
  SINCE MAR 1     12                        10      2        7
  SINCE JAN 1     12                        10      2        7
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    21   HIGHEST WIND DIRECTION     N (20)
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION    NE (40)
  AVERAGE WIND SPEED    15.0


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.8


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    96           500 AM
 LOWEST     86          1200 PM
 AVERAGE    91

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   65        90      1951
 MINIMUM TEMPERATURE (F)   44        30      1943


SUNRISE AND SUNSET
APRIL 30 2017.........SUNRISE   549 AM CDT   SUNSET   750 PM CDT
MAY  1 2017...........SUNRISE   547 AM CDT   SUNSET   751 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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