248
CDUS43 KLOT 170631
CLICHI
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
130 AM CDT SAT MAY 17 2008
...................................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR MAY 16 2008
CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1871 TO 2008
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
..............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 73 323 PM 94 1962 70 3 66
MINIMUM 40 315 AM 33 1997 47 -7 44
AVERAGE 57 59 -2 55
PRECIPITATION (IN)
YESTERDAY 0.00 1.38 1974 0.10 -0.10 0.14
MONTH TO DATE 3.09 1.75 1.34 0.65
SINCE MAR 1 8.44 8.08 0.36 7.80
SINCE JAN 1 13.90 11.46 2.44 11.13
SNOWFALL (IN)
YESTERDAY 0.0 0.0 MM 0.0 0.0 0.0
MONTH TO DATE 0.0 T 0.0 0.0
SINCE MAR 1 7.9 7.6 0.3 5.3
SINCE JUL 1 60.3 38.0 22.3 35.6
DEGREE DAYS
HEATING
YESTERDAY 8 7 1 10
MONTH TO DATE 156 152 4 74
SINCE MAR 1 1543 1523 20 1314
SINCE JUL 1 6234 6369 -135 5996
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 0 16 -16 26
SINCE MAR 1 0 26 -26 35
SINCE JAN 1 0 26 -26 35
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WIND (MPH)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION W (250)
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION SW (240)
AVERAGE WIND SPEED 9.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 86 200 AM
LOWEST 31 500 PM
AVERAGE 59
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THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 70 94 1962
MINIMUM TEMPERATURE (F) 48 36 2002
1973
SUNRISE AND SUNSET
MAY 17 2008...........SUNRISE 529 AM CDT SUNSET 808 PM CDT
MAY 18 2008...........SUNRISE 528 AM CDT SUNSET 809 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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