Climatological Report (Daily)
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000
CDUS43 KLOT 280633
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1233 AM CST SUN JAN 28 2018


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR JANUARY 27 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         50    337 AM  62    1916  31     19       31
  MINIMUM         36   1128 PM -10    1955  16     20       24
  AVERAGE         43                        24     19       28

PRECIPITATION (IN)
  YESTERDAY        0.00          0.74 1967   0.05  -0.05      T
  MONTH TO DATE    1.53                      1.53   0.00     2.83
  SINCE DEC 1      2.12                      3.78  -1.66     4.60
  SINCE JAN 1      1.53                      1.53   0.00     2.83

SNOWFALL (IN)
  YESTERDAY        0.0           6.6  1967   0.3   -0.3       T
  MONTH TO DATE    4.6                       9.3   -4.7      0.4
  SINCE DEC 1      9.9                      17.5   -7.6     18.1
  SINCE JUL 1     10.0                      18.9   -8.9     18.1
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       22                        41    -19       37
  MONTH TO DATE 1103                      1115    -12      972
  SINCE DEC 1   2268                      2270     -2     2203
  SINCE JUL 1   3311                      3526   -215     3032

 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    31   HIGHEST WIND DIRECTION    SW (210)
  HIGHEST GUST SPEED    42   HIGHEST GUST DIRECTION    SW (210)
  AVERAGE WIND SPEED    12.3


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.5


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    70           800 AM
 LOWEST     36           300 PM
 AVERAGE    53

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   31        60      1914
                                             1876
 MINIMUM TEMPERATURE (F)   17       -13      1977
                                             1963


SUNRISE AND SUNSET
JANUARY 28 2018.......SUNRISE   708 AM CST   SUNSET   501 PM CST
JANUARY 29 2018.......SUNRISE   707 AM CST   SUNSET   503 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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