235
CDUS43 KLOT 210640 CCA
CLICHI
CLIMATE REPORT/CORRECTION TO PRECIP TOTAL
NATIONAL WEATHER SERVICE CHICAGO IL
1232 AM CST TUE DEC 21 2004
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 20 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 29 1159 PM 67 1877 33 -4 30
MINIMUM 10 200 AM -9 1963 19 -9 10
AVERAGE 20 26 -6 20
PRECIPITATION (IN)
YESTERDAY T 1.67 1895 0.07 -0.07 0.00
MONTH TO DATE 1.10 1.67 -0.57 1.66
SINCE DEC 1 1.10 1.67 -0.57 1.66
SINCE JAN 1 31.53 35.51 -3.98 31.86
SNOWFALL (IN)
YESTERDAY T
MONTH TO DATE 0.3
SINCE DEC 1 0.3
SINCE JUL 1 5.5
DEGREE DAYS
HEATING
YESTERDAY 45 39 6 45
MONTH TO DATE 654 708 -54 689
SINCE DEC 1 654 708 -54 689
SINCE JUL 1 1713 1995 -282 1897
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 28 HIGHEST WIND DIRECTION S (170)
HIGHEST GUST SPEED 35 HIGHEST GUST DIRECTION S (170)
AVERAGE WIND SPEED 15.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT SNOW
RELATIVE HUMIDITY (PERCENT)
HIGHEST 58 1200 AM
LOWEST 37 300 PM
AVERAGE 48
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 33 62 1967
MINIMUM TEMPERATURE (F) 19 -14 1989
SUNRISE AND SUNSET
DECEMBER 21 2004......SUNRISE 716 AM CST SUNSET 424 PM CST
DECEMBER 22 2004......SUNRISE 717 AM CST SUNSET 424 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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