Climatological Report (Daily)
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000
CDUS43 KLOT 180637
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1236 AM CST SUN JAN 18 2015


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR JANUARY 17 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2015


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         42    237 PM  60    1894  31     11       20
  MINIMUM         26    223 AM -23    1982  16     10       12
  AVERAGE         34                        23     11       16

PRECIPITATION (IN)
  YESTERDAY        0.00          0.70 1910   0.06  -0.06     0.04
  MONTH TO DATE    1.11                      1.02   0.09     2.25
  SINCE DEC 1      1.90                      3.27  -1.37     4.19
  SINCE JAN 1      1.11                      1.02   0.09     2.25

SNOWFALL (IN)
  YESTERDAY        0.0           4.9  1970   0.4   -0.4      1.1
  MONTH TO DATE   10.8                       5.7    5.1     21.4
  SINCE DEC 1     10.8                      14.2   -3.4     35.6
  SINCE JUL 1     13.7                      15.6   -1.9     36.5
  SNOW DEPTH       4

DEGREE DAYS
 HEATING
  YESTERDAY       31                        42    -11       49
  MONTH TO DATE  821                       700    121      799
  SINCE DEC 1   1836                      1855    -19     2082
  SINCE JUL 1   3279                      3111    168     3365

 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    28   HIGHEST WIND DIRECTION    SW (210)
  HIGHEST GUST SPEED    37   HIGHEST GUST DIRECTION    SW (220)
  AVERAGE WIND SPEED    15.4


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.8


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    88          1200 AM
 LOWEST     60          1000 AM
 AVERAGE    74

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   31        61      1996
 MINIMUM TEMPERATURE (F)   16       -21      1994


SUNRISE AND SUNSET
JANUARY 18 2015.......SUNRISE   716 AM CST   SUNSET   449 PM CST
JANUARY 19 2015.......SUNRISE   715 AM CST   SUNSET   450 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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