Climatological Report (Daily)
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000
CDUS43 KLOT 212242
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
442 PM CST SAT JAN 21 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR JANUARY 21 2017...
VALID TODAY AS OF 0400 PM LOCAL TIME.

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)
 TODAY
  MAXIMUM         59    238 PM  62    1906  31     28       29
  MINIMUM         42   1253 AM -22    1984  16     26        9
  AVERAGE         51                        24     27       19

PRECIPITATION (IN)
  TODAY            T             1.49 1916   0.05  -0.05     0.00
  MONTH TO DATE    2.73                      1.23   1.50     0.65
  SINCE DEC 1      4.50                      3.48   1.02     5.52
  SINCE JAN 1      2.73                      1.23   1.50     0.65

SNOWFALL (IN)
  TODAY            0.0           5.0  1958   0.4   -0.4      0.0
  MONTH TO DATE    0.4                       7.2   -6.8      5.9
  SINCE DEC 1     18.1                      15.4    2.7     10.4
  SINCE JUL 1     18.1                      16.8    1.3     21.6

DEGREE DAYS
 HEATING
  TODAY           14                        42    -28       46
  MONTH TO DATE  796                       868    -72      906
  SINCE DEC 1   2027                      2023      4     1706
  SINCE JUL 1   2856                      3279   -423     2679

 COOLING
  TODAY            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     S (190)
  HIGHEST GUST SPEED    27   HIGHEST GUST DIRECTION    SW (240)
  AVERAGE WIND SPEED    10.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.6


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  LIGHT RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           100 AM
 LOWEST     62           100 PM
 AVERAGE    81

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   31        59      1909
 MINIMUM TEMPERATURE (F)   16       -17      1936
                                             1883


SUNRISE AND SUNSET
JANUARY 21 2017.......SUNRISE   713 AM CST   SUNSET   453 PM CST
JANUARY 22 2017.......SUNRISE   713 AM CST   SUNSET   454 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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