468  
CDUS43 KLOT 280643  
CLICHI  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
140 AM CDT WED MAY 28 2008  
 
...................................  
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR MAY 27 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 50 123 PM 94 1911 74 -24 75  
MINIMUM 42 521 AM 33 1992 51 -9 57  
AVERAGE 46 63 -17 66  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.80 1939 0.11 -0.11 0.04  
MONTH TO DATE 3.69 2.94 0.75 1.79  
SINCE MAR 1 9.04 9.27 -0.23 8.94  
SINCE JAN 1 14.50 12.65 1.85 12.27  
 
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 19 5 14 0  
MONTH TO DATE 268 216 52 116  
SINCE MAR 1 1655 1587 68 1356  
SINCE JUL 1 6346 6433 -87 6038  
 
COOLING  
YESTERDAY 0 2 -2 1  
MONTH TO DATE 0 36 -36 57  
SINCE MAR 1 0 46 -46 66  
SINCE JAN 1 0 46 -46 66    
..............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION NE (40)  
HIGHEST GUST SPEED 38 HIGHEST GUST DIRECTION NE (40)  
AVERAGE WIND SPEED 19.3  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 82 100 AM  
LOWEST 49 600 PM  
AVERAGE 66  
 
..........................................................  
 
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 74 93 1977  
MINIMUM TEMPERATURE (F) 52 33 1992  
 
 
SUNRISE AND SUNSET  
MAY 28 2008...........SUNRISE 520 AM CDT SUNSET 818 PM CDT  
MAY 29 2008...........SUNRISE 520 AM CDT SUNSET 819 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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