Climatological Report (Daily)
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CDUS43 KLOT 170650
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
150 AM CDT FRI APR 17 2015


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR APRIL 16 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         66    336 PM  87    2002  59      7       52
  MINIMUM         45    732 AM  18    1875  39      6       26
  AVERAGE         56                        49      7       39

PRECIPITATION (IN)
  YESTERDAY        T             1.97 1921   0.11  -0.11     0.00
  MONTH TO DATE    2.08                      1.75   0.33     1.28
  SINCE MAR 1      3.18                      4.25  -1.07     2.99
  SINCE JAN 1      6.04                      7.77  -1.73     8.29

SNOWFALL (IN)
  YESTERDAY       MM             5.4  1961   0.0   MM        0.0
  MONTH TO DATE    0.0                       1.0   -1.0      1.4
  SINCE MAR 1      7.1                       6.6    0.5     13.7
  SINCE JUL 1     50.7                      36.4   14.3     82.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        9                        16     -7       26
  MONTH TO DATE  225                       302    -77      303
  SINCE MAR 1   1135                      1143     -8     1328
  SINCE JUL 1   6315                      5877    438     6743

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE MAR 1      0                         1     -1        0
  SINCE JAN 1      0                         1     -1        0
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    16   HIGHEST WIND DIRECTION     E (100)
  HIGHEST GUST SPEED    23   HIGHEST GUST DIRECTION     E (70)
  AVERAGE WIND SPEED     6.5


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.8


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    92           700 AM
 LOWEST     30          1200 AM
 AVERAGE    61

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   60        88      1976
 MINIMUM TEMPERATURE (F)   39        17      1875


SUNRISE AND SUNSET
APRIL 17 2015.........SUNRISE   608 AM CDT   SUNSET   735 PM CDT
APRIL 18 2015.........SUNRISE   607 AM CDT   SUNSET   736 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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