Climatological Report (Daily)
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000
CDUS43 KLOT 010635
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1233 AM CST THU FEB 1 2018


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR JANUARY 31 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         42    257 PM  65    1989  32     10       39
  MINIMUM         31    225 AM -12    1985  17     14       35
                                      1899
  AVERAGE         37                        24     13       37

PRECIPITATION (IN)
  YESTERDAY        0.00          1.52 1914   0.05  -0.05     0.03
  MONTH TO DATE    1.54                      1.73  -0.19     2.87
  SINCE DEC 1      2.13                      3.98  -1.85     4.64
  SINCE JAN 1      1.54                      1.73  -0.19     2.87

SNOWFALL (IN)
  YESTERDAY        0.0           9.5  1914   0.4   -0.4      0.0
  MONTH TO DATE    4.6                      10.8   -6.2      0.6
  SINCE DEC 1      9.9                      19.0   -9.1     18.3
  SINCE JUL 1     10.0                      20.4  -10.4     18.3
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       28                        41    -13       28
  MONTH TO DATE 1245                      1279    -34     1117
  SINCE DEC 1   2410                      2434    -24     2348
  SINCE JUL 1   3453                      3690   -237     3177

 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    25   HIGHEST WIND DIRECTION     S (190)
  HIGHEST GUST SPEED    34   HIGHEST GUST DIRECTION     S (180)
  AVERAGE WIND SPEED    13.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    70           800 PM
 LOWEST     45          1100 AM
 AVERAGE    58

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   32        56      1968
 MINIMUM TEMPERATURE (F)   17       -14      1985


SUNRISE AND SUNSET
FEBRUARY  1 2018......SUNRISE   704 AM CST   SUNSET   507 PM CST
FEBRUARY  2 2018......SUNRISE   703 AM CST   SUNSET   508 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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