Climatological Report (Daily)
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044
CDUS43 KLOT 202133
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
433 PM CDT THU APR 20 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR APRIL 20 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         73    948 AM  87    1985  61     12       71
  MINIMUM         48   1234 AM  24    1897  40      8       51
  AVERAGE         61                        51     10       61

PRECIPITATION (IN)
  TODAY            T             2.37 2000   0.11  -0.11     0.48
  MONTH TO DATE    2.80                      2.21   0.59     1.17
  SINCE MAR 1      6.81                      4.71   2.10     4.51
  SINCE JAN 1     11.20                      8.23   2.97     6.58

SNOWFALL (IN)
  TODAY            0.0           0.2  1943   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            4                        15    -11        4
  MONTH TO DATE  219                       364   -145      387
  SINCE MAR 1   1004                      1205   -201     1052
  SINCE JUL 1   4929                      5939  -1010     5060

 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    29   HIGHEST WIND DIRECTION     W (260)
  HIGHEST GUST SPEED    35   HIGHEST GUST DIRECTION    SW (240)
  AVERAGE WIND SPEED    12.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.8


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    83           200 AM
 LOWEST     56           200 PM
 AVERAGE    70

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   61        88      1985
 MINIMUM TEMPERATURE (F)   41        27      1986


SUNRISE AND SUNSET
APRIL 20 2017.........SUNRISE   603 AM CDT   SUNSET   739 PM CDT
APRIL 21 2017.........SUNRISE   602 AM CDT   SUNSET   740 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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