438  
CDUS43 KLOT 200631  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
1231 AM CST WED JAN 20 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR JANUARY 19 2021...  
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1997 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 32 8:34 PM 55 2006 31 1 17  
MINIMUM 14 4:04 AM -5 2008 15 -1 1  
AVERAGE 23 23 0 9  
 
PRECIPITATION (IN)  
YESTERDAY 0.01R T 0.04 -0.03 0.00  
MONTH TO DATE 0.52 0.78 -0.26 1.68  
SINCE DEC 1 2.37 2.50 -0.13 3.06  
SINCE JAN 1 0.52 0.78 -0.26 1.68  
 
DEGREE DAYS  
HEATING  
YESTERDAY 42 42 0 56  
MONTH TO DATE 692 796 -104 688  
SINCE DEC 1 1765 1969 -204 1696  
SINCE JUL 1 2936 3223 -287 3072  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION W (250)  
HIGHEST WIND SPEED 30 HIGHEST WIND DIRECTION NW (330)  
HIGHEST GUST SPEED 40 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 10.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
SNOW  
LIGHT SNOW  
FOG  
HAZE  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 31 45 2017  
MINIMUM TEMPERATURE (F) 15 -7 2008  
 
SUNRISE AND SUNSET  
JANUARY 20 2021.......SUNRISE 7:15 AM CST SUNSET 4:53 PM CST  
JANUARY 21 2021.......SUNRISE 7:15 AM CST SUNSET 4:55 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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