Climatological Report (Daily)
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020
CDUS43 KLOT 100641
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1240 AM CST WED JAN 10 2018


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR JANUARY 9 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         36    317 PM  60    1880  31      5       33
  MINIMUM         26    744 AM -20    1875  17      9       19
  AVERAGE         31                        24      7       26

PRECIPITATION (IN)
  YESTERDAY        0.00          0.76 1946   0.06  -0.06     0.02
  MONTH TO DATE    0.03                      0.56  -0.53     0.13
  SINCE DEC 1      0.62                      2.81  -2.19     1.90
  SINCE JAN 1      0.03                      0.56  -0.53     0.13

SNOWFALL (IN)
  YESTERDAY        0.0           6.8  1977   0.4   -0.4      0.2
  MONTH TO DATE    0.1                       3.0   -2.9      0.2
  SINCE DEC 1      5.4                      11.2   -5.8     17.9
  SINCE JUL 1      5.5                      12.6   -7.1     17.9
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       34                        41     -7       39
  MONTH TO DATE  472                       369    103      422
  SINCE DEC 1   1637                      1524    113     1653
  SINCE JUL 1   2680                      2780   -100     2482

 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 (160)
  HIGHEST GUST SPEED    18   HIGHEST GUST DIRECTION     S (170)
  AVERAGE WIND SPEED     6.0


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100          1000 AM
 LOWEST     75           300 PM
 AVERAGE    88

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   31        60      1975
 MINIMUM TEMPERATURE (F)   17       -26      1982


SUNRISE AND SUNSET
JANUARY 10 2018.......SUNRISE   719 AM CST   SUNSET   440 PM CST
JANUARY 11 2018.......SUNRISE   719 AM CST   SUNSET   441 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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