Climatological Report (Daily)
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CDUS43 KLOT 280641
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
138 AM CDT FRI APR 28 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR APRIL 27 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         62   1230 AM  87    1986  64     -2       49
  MINIMUM         41   1159 PM  29    1945  43     -2       41
  AVERAGE         52                        53     -1       45

PRECIPITATION (IN)
  YESTERDAY        0.14          2.13 1959   0.12   0.02     0.47
  MONTH TO DATE    3.16                      3.02   0.14     1.73
  SINCE MAR 1      7.17                      5.52   1.65     5.07
  SINCE JAN 1     11.56                      9.04   2.52     7.14

SNOWFALL (IN)
  YESTERDAY        0.0           0.2  1950   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
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       13                        12      1       20
  MONTH TO DATE  282                       458   -176      460
  SINCE MAR 1   1067                      1299   -232     1125
  SINCE JUL 1   4992                      6033  -1041     5133

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE   12                         0     12        7
  SINCE MAR 1     12                         1     11        7
  SINCE JAN 1     12                         1     11        7
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    28   HIGHEST WIND DIRECTION    SW (240)
  HIGHEST GUST SPEED    35   HIGHEST GUST DIRECTION     W (250)
  AVERAGE WIND SPEED    15.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    97          1200 AM
 LOWEST     65           500 PM
 AVERAGE    81

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   64        86      1915
 MINIMUM TEMPERATURE (F)   43        28      1992


SUNRISE AND SUNSET
APRIL 28 2017.........SUNRISE   551 AM CDT   SUNSET   747 PM CDT
APRIL 29 2017.........SUNRISE   550 AM CDT   SUNSET   749 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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