Climatological Report (Daily)
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CDUS43 KLOT 180633
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
132 AM CDT SAT APR 18 2015


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR APRIL 17 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         78    334 PM  88    1976  60     18       62
  MINIMUM         45   1259 AM  17    1875  39      6       40
  AVERAGE         62                        50     12       51

PRECIPITATION (IN)
  YESTERDAY        0.00          2.01 2013   0.12  -0.12     0.00
  MONTH TO DATE    2.08                      1.87   0.21     1.28
  SINCE MAR 1      3.18                      4.37  -1.19     2.99
  SINCE JAN 1      6.04                      7.89  -1.85     8.29

SNOWFALL (IN)
  YESTERDAY        0.0           0.5  1949   0.0    0.0      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        3                        16    -13       14
  MONTH TO DATE  228                       318    -90      317
  SINCE MAR 1   1138                      1159    -21     1342
  SINCE JUL 1   6318                      5893    425     6757

 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    14   HIGHEST WIND DIRECTION     W (270)
  HIGHEST GUST SPEED    17   HIGHEST GUST DIRECTION     W (250)
  AVERAGE WIND SPEED     5.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.4


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           500 AM
 LOWEST     31           300 PM
 AVERAGE    62

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   60        89      2002
 MINIMUM TEMPERATURE (F)   40        23      1983
                                             1875


SUNRISE AND SUNSET
APRIL 18 2015.........SUNRISE   607 AM CDT   SUNSET   736 PM CDT
APRIL 19 2015.........SUNRISE   605 AM CDT   SUNSET   737 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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