Climatological Report (Daily)
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000
CDUS43 KLOT 300649
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1240 AM CST TUE JAN 30 2018


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR JANUARY 29 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         30   1214 AM  63    2013  31     -1       28
  MINIMUM         17   1153 PM -16    1966  17      0       21
                                      1873
  AVERAGE         24                        24      0       25

PRECIPITATION (IN)
  YESTERDAY        T             1.33 2013   0.05  -0.05      T
  MONTH TO DATE    1.54                      1.63  -0.09     2.83
  SINCE DEC 1      2.13                      3.88  -1.75     4.60
  SINCE JAN 1      1.54                      1.63  -0.09     2.83

SNOWFALL (IN)
  YESTERDAY        T             5.3  1909   0.3   -0.3      0.1
  MONTH TO DATE    4.6                      10.0   -5.4      0.5
  SINCE DEC 1      9.9                      18.2   -8.3     18.2
  SINCE JUL 1     10.0                      19.6   -9.6     18.2
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       41                        41      0       40
  MONTH TO DATE 1175                      1197    -22     1050
  SINCE DEC 1   2340                      2352    -12     2281
  SINCE JUL 1   3383                      3608   -225     3110

 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    21   HIGHEST WIND DIRECTION     N (350)
  HIGHEST GUST SPEED    26   HIGHEST GUST DIRECTION     N (350)
  AVERAGE WIND SPEED    12.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT SNOW


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    81           300 AM
 LOWEST     55           500 PM
 AVERAGE    68

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   32        55      1988
 MINIMUM TEMPERATURE (F)   17       -15      1966
                                             1951


SUNRISE AND SUNSET
JANUARY 30 2018.......SUNRISE   706 AM CST   SUNSET   504 PM CST
JANUARY 31 2018.......SUNRISE   705 AM CST   SUNSET   505 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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