Climatological Report (Daily)
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000
CDUS43 KLOT 212235
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
434 PM CST SUN JAN 21 2018


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR JANUARY 21 2018...
VALID TODAY AS OF 0400 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2018


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         44    359 PM  62    1906  31     13       59
  MINIMUM         36    503 AM -22    1984  16     20       40
  AVERAGE         40                        24     16       50

PRECIPITATION (IN)
  TODAY            0.00          1.49 1916   0.05  -0.05      T
  MONTH TO DATE    0.63                      1.23  -0.60     2.73
  SINCE DEC 1      1.22                      3.48  -2.26     4.50
  SINCE JAN 1      0.63                      1.23  -0.60     2.73

SNOWFALL (IN)
  TODAY            0.0           5.0  1958   0.4   -0.4      0.0
  MONTH TO DATE    3.8                       7.2   -3.4      0.4
  SINCE DEC 1      9.1                      15.4   -6.3     18.1
  SINCE JUL 1      9.2                      16.8   -7.6     18.1

DEGREE DAYS
 HEATING
  TODAY           25                        42    -17       15
  MONTH TO DATE  941                       868     73      797
  SINCE DEC 1   2106                      2023     83     2028
  SINCE JUL 1   3149                      3279   -130     2857

 COOLING
  TODAY            0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1      0                         0      0        0
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED     8   HIGHEST WIND DIRECTION     S (160)
  HIGHEST GUST SPEED    11   HIGHEST GUST DIRECTION     S (180)
  AVERAGE WIND SPEED     3.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  FOG
  FOG W/VISIBILITY <= 1/4 MILE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100          1000 AM
 LOWEST     85           100 AM
 AVERAGE    93

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   31        59      1909
 MINIMUM TEMPERATURE (F)   16       -17      1936
                                             1883


SUNRISE AND SUNSET
JANUARY 21 2018.......SUNRISE   714 AM CST   SUNSET   453 PM CST
JANUARY 22 2018.......SUNRISE   713 AM CST   SUNSET   454 PM CST


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




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