Climatological Report (Daily)
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044
CDUS43 KLOT 212136
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
436 PM CDT FRI APR 21 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR APRIL 21 2017...
VALID TODAY AS OF 0400 PM LOCAL TIME.

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)
 TODAY
  MAXIMUM         53    259 PM  88    1985  61     -8       70
  MINIMUM         44    709 AM  27    1986  41      3       50
  AVERAGE         49                        51     -2       60

PRECIPITATION (IN)
  TODAY            0.00          1.08 1973   0.11  -0.11     0.01
  MONTH TO DATE    2.80                      2.32   0.48     1.18
  SINCE MAR 1      6.81                      4.82   1.99     4.52
  SINCE JAN 1     11.20                      8.34   2.86     6.59

SNOWFALL (IN)
  TODAY            0.0           0.6  1903   0.0    0.0      0.0
  MONTH TO DATE    0.0                       1.1   -1.1      1.1
  SINCE MAR 1      7.8                       6.7    1.1      3.7
  SINCE JUL 1     26.1                      36.2  -10.1     31.2

DEGREE DAYS
 HEATING
  TODAY           16                        15      1        5
  MONTH TO DATE  235                       379   -144      392
  SINCE MAR 1   1020                      1220   -200     1057
  SINCE JUL 1   4945                      5954  -1009     5065

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


WIND (MPH)
  HIGHEST WIND SPEED    22   HIGHEST WIND DIRECTION    NW (300)
  HIGHEST GUST SPEED    29   HIGHEST GUST DIRECTION    NW (320)
  AVERAGE WIND SPEED    13.3


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.7


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    65           400 AM
 LOWEST     46           300 PM
 AVERAGE    56

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   62        91      1980
 MINIMUM TEMPERATURE (F)   41        24      1986


SUNRISE AND SUNSET
APRIL 21 2017.........SUNRISE   602 AM CDT   SUNSET   740 PM CDT
APRIL 22 2017.........SUNRISE   600 AM CDT   SUNSET   741 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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