Climatological Report (Daily)
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000
CDUS43 KLOT 160649
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1248 AM CST TUE JAN 16 2018


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR JANUARY 15 2018...

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)
 YESTERDAY
  MAXIMUM         24   1225 PM  60    1949  31     -7       36
  MINIMUM         10   1159 PM -19    1979  16     -6       20
  AVERAGE         17                        24     -7       28

PRECIPITATION (IN)
  YESTERDAY        0.14          0.81 1877   0.06   0.08     0.00
  MONTH TO DATE    0.62                      0.91  -0.29     0.71
  SINCE DEC 1      1.21                      3.16  -1.95     2.48
  SINCE JAN 1      0.62                      0.91  -0.29     0.71

SNOWFALL (IN)
  YESTERDAY        2.3           4.2  1997   0.4    1.9      0.0
  MONTH TO DATE    3.2                       5.0   -1.8      0.4
  SINCE DEC 1      8.5                      13.2   -4.7     18.1
  SINCE JUL 1      8.6                      14.6   -6.0     18.1
  SNOW DEPTH       2

DEGREE DAYS
 HEATING
  YESTERDAY       48                        42      6       37
  MONTH TO DATE  718                       616    102      638
  SINCE DEC 1   1883                      1771    112     1869
  SINCE JUL 1   2926                      3027   -101     2698

 COOLING
  YESTERDAY        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    17   HIGHEST WIND DIRECTION     S (170)
  HIGHEST GUST SPEED    22   HIGHEST GUST DIRECTION     S (170)
  AVERAGE WIND SPEED    10.9


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT SNOW
  FOG
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    88          1200 PM
 LOWEST     73           200 PM
 AVERAGE    81

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   31        57      1990
 MINIMUM TEMPERATURE (F)   16       -25      1982


SUNRISE AND SUNSET
JANUARY 16 2018.......SUNRISE   717 AM CST   SUNSET   447 PM CST
JANUARY 17 2018.......SUNRISE   716 AM CST   SUNSET   448 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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