867
CDUS43 KLOT 230647
CLICHI
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1245 AM CST THU DEC 23 2004
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 22 2004...
CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1871 TO 2004
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
..................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 14 248 PM 57 1957 32 -18 47
1875
MINIMUM 8 1032 AM -21 1872 18 -10 36
AVERAGE 11 25 -14 42
PRECIPITATION (IN)
YESTERDAY 0.00 0.80 1988 0.07 -0.07 0.01
MONTH TO DATE 1.10 1.81 -0.71 1.67
SINCE DEC 1 1.10 1.81 -0.71 1.67
SINCE JAN 1 31.53 35.65 -4.12 31.87
SNOWFALL (IN)
YESTERDAY 0.0
MONTH TO DATE 0.3
SINCE DEC 1 0.3
SINCE JUL 1 5.4
DEGREE DAYS
HEATING
YESTERDAY 54 39 15 23
MONTH TO DATE 748 786 -38 740
SINCE DEC 1 748 786 -38 740
SINCE JUL 1 1807 2073 -266 1948
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 615 830 -215 695
..................................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 11.5
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 69 500 AM
LOWEST 52 800 PM
AVERAGE 61
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 32 62 1982
MINIMUM TEMPERATURE (F) 18 -21 1983
SUNRISE AND SUNSET
DECEMBER 23 2004......SUNRISE 717 AM CST SUNSET 425 PM CST
DECEMBER 24 2004......SUNRISE 718 AM CST SUNSET 425 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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