Climatological Report (Daily)
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831
CDUS43 KLOT 202231
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
431 PM CST SAT JAN 20 2018


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR JANUARY 20 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         45    352 PM  63    1906  31     14       43
  MINIMUM         32    740 AM -27    1985  16     16       38
  AVERAGE         39                        23     16       41

PRECIPITATION (IN)
  TODAY            0.00          1.13 1898   0.06  -0.06     0.18
  MONTH TO DATE    0.63                      1.18  -0.55     2.73
  SINCE DEC 1      1.22                      3.43  -2.21     4.50
  SINCE JAN 1      0.63                      1.18  -0.55     2.73

SNOWFALL (IN)
  TODAY            0.0           8.0  1886   0.4   -0.4      0.0
  MONTH TO DATE    3.8                       6.8   -3.0      0.4
  SINCE DEC 1      9.1                      15.0   -5.9     18.1
  SINCE JUL 1      9.2                      16.4   -7.2     18.1

DEGREE DAYS
 HEATING
  TODAY           26                        42    -16       24
  MONTH TO DATE  916                       826     90      782
  SINCE DEC 1   2081                      1981    100     2013
  SINCE JUL 1   3124                      3237   -113     2842

 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    15   HIGHEST WIND DIRECTION    SW (220)
  HIGHEST GUST SPEED    22   HIGHEST GUST DIRECTION    SW (220)
  AVERAGE WIND SPEED     9.5


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    75           700 AM
 LOWEST     58           100 PM
 AVERAGE    67

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   31        62      1906
 MINIMUM TEMPERATURE (F)   16       -22      1984


SUNRISE AND SUNSET
JANUARY 20 2018.......SUNRISE   714 AM CST   SUNSET   451 PM CST
JANUARY 21 2018.......SUNRISE   714 AM CST   SUNSET   453 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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