902  
CDUS43 KLOT 050634  
CLICHI  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
134 AM CDT MON MAY 5 2008  
 
...................................  
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR MAY 4 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 65 514 PM 92 1952 65 0 66  
MINIMUM 38 512 AM 32 1954 43 -5 49  
AVERAGE 52 54 -2 58  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.70 1990 0.11 -0.11 T  
MONTH TO DATE 1.28 0.45 0.83 T  
SINCE MAR 1 6.63 6.78 -0.15 7.15  
SINCE JAN 1 12.09 10.16 1.93 10.48  
 
SNOWFALL (IN)  
YESTERDAY 0.0 T 1891 0.0 0.0 0.0  
1907  
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 13 11 2 7  
MONTH TO DATE 34 45 -11 30  
SINCE MAR 1 1421 1416 5 1270  
SINCE JUL 1 6112 6262 -150 5952  
 
COOLING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 0 4 -4 2  
SINCE MAR 1 0 14 -14 11  
SINCE JAN 1 0 14 -14 11    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION SW (230)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION W (260)  
AVERAGE WIND SPEED 6.3  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 85 500 AM  
LOWEST 27 600 PM  
AVERAGE 56  
 
..........................................................  
 
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 94 1949  
MINIMUM TEMPERATURE (F) 44 32 1992  
 
 
SUNRISE AND SUNSET  
MAY 5 2008...........SUNRISE 542 AM CDT SUNSET 755 PM CDT  
MAY 6 2008...........SUNRISE 541 AM CDT SUNSET 756 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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