Climatological Report (Daily)
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000
CDUS43 KLOT 172135
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
432 PM CDT FRI APR 17 2015


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR APRIL 17 2015...
VALID TODAY AS OF 0400 PM LOCAL TIME.

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)
 TODAY
  MAXIMUM         77    256 PM  88    1976  60     17       62
  MINIMUM         45   1259 AM  17    1875  39      6       40
  AVERAGE         61                        50     11       51

PRECIPITATION (IN)
  TODAY            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)
  TODAY            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

DEGREE DAYS
 HEATING
  TODAY            4                        16    -12       14
  MONTH TO DATE  229                       318    -89      317
  SINCE MAR 1   1139                      1159    -20     1342
  SINCE JUL 1   6319                      5893    426     6757

 COOLING
  TODAY            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    12   HIGHEST WIND DIRECTION    NW (320)
  HIGHEST GUST SPEED    16   HIGHEST GUST DIRECTION     W (270)
  AVERAGE WIND SPEED     4.4


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.3


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  FOG
  HAZE


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

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


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