Climatological Report (Daily)
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000
CDUS43 KLOT 090639
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1239 AM CST TUE JAN 9 2018


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR JANUARY 8 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         37    358 PM  63    1965  31      6       19
  MINIMUM         31   1159 PM -11    1942  17     14        2
                                      1875
  AVERAGE         34                        24     10       11

PRECIPITATION (IN)
  YESTERDAY        T             1.18 1935   0.06  -0.06     0.00
  MONTH TO DATE    0.03                      0.50  -0.47     0.11
  SINCE DEC 1      0.62                      2.75  -2.13     1.88
  SINCE JAN 1      0.03                      0.50  -0.47     0.11

SNOWFALL (IN)
  YESTERDAY        0.0           3.6  1974   0.3   -0.3      0.0
  MONTH TO DATE    0.1                       2.6   -2.5       T
  SINCE DEC 1      5.4                      10.8   -5.4     17.7
  SINCE JUL 1      5.5                      12.2   -6.7     17.7
  SNOW DEPTH       1

DEGREE DAYS
 HEATING
  YESTERDAY       31                        41    -10       54
  MONTH TO DATE  438                       328    110      383
  SINCE DEC 1   1603                      1483    120     1614
  SINCE JUL 1   2646                      2739    -93     2443

 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    18   HIGHEST WIND DIRECTION     W (250)
  HIGHEST GUST SPEED    24   HIGHEST GUST DIRECTION     W (250)
  AVERAGE WIND SPEED    11.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.6


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    89           100 AM
 LOWEST     70           300 PM
 AVERAGE    80

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   31        60      1880
 MINIMUM TEMPERATURE (F)   17       -20      1875


SUNRISE AND SUNSET
JANUARY  9 2018.......SUNRISE   719 AM CST   SUNSET   439 PM CST
JANUARY 10 2018.......SUNRISE   719 AM CST   SUNSET   440 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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