Climatological Report (Daily)
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CDUS43 KLOT 050639
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1238 AM CST FRI JAN 5 2018


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR JANUARY 4 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         12    313 PM  64    1997  31    -19       19
  MINIMUM          0    740 AM -14    1884  17    -17        7
  AVERAGE          6                        24    -18       13

PRECIPITATION (IN)
  YESTERDAY        0.00          1.20 1993   0.06  -0.06     0.00
  MONTH TO DATE    T                         0.25  -0.25     0.11
  SINCE DEC 1      0.59                      2.50  -1.91     1.88
  SINCE JAN 1      T                         0.25  -0.25     0.11

SNOWFALL (IN)
  YESTERDAY        0.0           5.6  2004   0.3   -0.3      0.0
  MONTH TO DATE    0.1                       1.3   -1.2      0.0
  SINCE DEC 1      5.4                       9.5   -4.1     17.7
  SINCE JUL 1      5.5                      10.9   -5.4     17.7
  SNOW DEPTH       1

DEGREE DAYS
 HEATING
  YESTERDAY       59                        41     18       52
  MONTH TO DATE  246                       164     82      156
  SINCE DEC 1   1411                      1319     92     1387
  SINCE JUL 1   2454                      2575   -121     2216

 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    20   HIGHEST WIND DIRECTION    NW (330)
  HIGHEST GUST SPEED    24   HIGHEST GUST DIRECTION    NW (330)
  AVERAGE WIND SPEED    12.4


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.1


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    69           400 AM
 LOWEST     48           200 PM
 AVERAGE    59

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   31        56      1890
 MINIMUM TEMPERATURE (F)   17       -18      1884


SUNRISE AND SUNSET
JANUARY  5 2018.......SUNRISE   720 AM CST   SUNSET   435 PM CST
JANUARY  6 2018.......SUNRISE   720 AM CST   SUNSET   436 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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