Climatological Report (Daily)
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185
CDUS43 KLOT 180639
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1237 AM CST WED JAN 18 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR JANUARY 17 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         39   1212 PM  60    1894  31      8        8
  MINIMUM         35   1159 PM -23    1982  16     19       -1
  AVERAGE         37                        23     14        4

PRECIPITATION (IN)
  YESTERDAY        0.48          0.70 1910   0.06   0.42     0.00
  MONTH TO DATE    2.09                      1.02   1.07     0.60
  SINCE DEC 1      3.86                      3.27   0.59     5.47
  SINCE JAN 1      2.09                      1.02   1.07     0.60

SNOWFALL (IN)
  YESTERDAY        0.0           4.9  1970   0.4   -0.4      0.0
  MONTH TO DATE    0.4                       5.7   -5.3      5.0
  SINCE DEC 1     18.1                      13.9    4.2      9.5
  SINCE JUL 1     18.1                      15.3    2.8     20.7
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       28                        42    -14       61
  MONTH TO DATE  697                       700     -3      694
  SINCE DEC 1   1928                      1855     73     1494
  SINCE JUL 1   2757                      3111   -354     2467

 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    16   HIGHEST WIND DIRECTION     W (280)
  HIGHEST GUST SPEED    20   HIGHEST GUST DIRECTION     W (280)
  AVERAGE WIND SPEED     9.6


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100          1200 AM
 LOWEST     92           800 AM
 AVERAGE    96

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


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 2017.......SUNRISE   715 AM CST   SUNSET   449 PM CST
JANUARY 19 2017.......SUNRISE   715 AM CST   SUNSET   451 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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