Climatological Report (Daily)
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558
CDUS43 KLOT 070640
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1238 AM CST SUN JAN 7 2018


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR JANUARY 6 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         17    243 PM  60    2008  31    -14        9
  MINIMUM         -2    745 AM -16    2014  17    -19        0
  AVERAGE          8                        24    -16        5

PRECIPITATION (IN)
  YESTERDAY        0.00          1.44 1918   0.07  -0.07      T
  MONTH TO DATE    T                         0.38  -0.38     0.11
  SINCE DEC 1      0.59                      2.63  -2.04     1.88
  SINCE JAN 1      T                         0.38  -0.38     0.11

SNOWFALL (IN)
  YESTERDAY        0.0          14.4  1918   0.3   -0.3       T
  MONTH TO DATE    0.1                       1.9   -1.8       T
  SINCE DEC 1      5.4                      10.1   -4.7     17.7
  SINCE JUL 1      5.5                      11.5   -6.0     17.7
  SNOW DEPTH       1

DEGREE DAYS
 HEATING
  YESTERDAY       57                        41     16       60
  MONTH TO DATE  363                       246    117      273
  SINCE DEC 1   1528                      1401    127     1504
  SINCE JUL 1   2571                      2657    -86     2333

 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    14   HIGHEST WIND DIRECTION     S (200)
  HIGHEST GUST SPEED    17   HIGHEST GUST DIRECTION     S (170)
  AVERAGE WIND SPEED     6.4


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.2


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    72           800 AM
 LOWEST     36           300 PM
 AVERAGE    54

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   31        65      2008
 MINIMUM TEMPERATURE (F)   17       -16      1912


SUNRISE AND SUNSET
JANUARY  7 2018.......SUNRISE   719 AM CST   SUNSET   437 PM CST
JANUARY  8 2018.......SUNRISE   719 AM CST   SUNSET   438 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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