Climatological Report (Daily)
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CDUS43 KLOT 160641
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
140 AM CDT SUN APR 16 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR APRIL 15 2017...

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)
 YESTERDAY
  MAXIMUM         82    357 PM  88    2002  59     23       68
  MINIMUM         61    117 AM  25    1943  39     22       42
  AVERAGE         72                        49     23       55

PRECIPITATION (IN)
  YESTERDAY        0.09          1.74 1884   0.12  -0.03     0.00
  MONTH TO DATE    2.20                      1.64   0.56     0.69
  SINCE MAR 1      6.21                      4.14   2.07     4.03
  SINCE JAN 1     10.60                      7.66   2.94     6.10

SNOWFALL (IN)
  YESTERDAY        0.0           1.5  1980   0.1   -0.1      0.0
  MONTH TO DATE    0.0                       1.0   -1.0      1.1
  SINCE MAR 1      7.8                       6.6    1.2      3.7
  SINCE JUL 1     26.1                      36.1   RRRR     31.2
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        0                        17    -17       10
  MONTH TO DATE  192                       286    -94      361
  SINCE MAR 1    977                      1127   -150     1026
  SINCE JUL 1   4902                      5861   -959     5034

 COOLING
  YESTERDAY        7                         0      7        0
  MONTH TO DATE    9                         0      9        0
  SINCE MAR 1      9                         1      8        0
  SINCE JAN 1      9                         1      8        0
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    32   HIGHEST WIND DIRECTION     W (270)
  HIGHEST GUST SPEED    41   HIGHEST GUST DIRECTION     W (270)
  AVERAGE WIND SPEED    16.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.7


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  THUNDERSTORM
  HEAVY RAIN
  LIGHT RAIN


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    84          1200 AM
 LOWEST     34           400 PM
 AVERAGE    59

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   59        87      2002
 MINIMUM TEMPERATURE (F)   39        18      1875


SUNRISE AND SUNSET
APRIL 16 2017.........SUNRISE   609 AM CDT   SUNSET   734 PM CDT
APRIL 17 2017.........SUNRISE   608 AM CDT   SUNSET   735 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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