507  
CDUS43 KLOT 300641  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
1241 AM CST WED DEC 30 2020  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR DECEMBER 29 2020...  
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1997 TO 2020  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 31 11:59 PM 57 2019 32 -1 57  
MINIMUM 13 3:40 AM 0 2009 16 -3 44  
AVERAGE 22 24 -2 51  
 
PRECIPITATION (IN)  
YESTERDAY 0.41 0.71 0.04 0.37 0.71  
MONTH TO DATE 1.70 1.63 0.07 1.26  
SINCE DEC 1 1.70 1.63 0.07 1.26  
SINCE JAN 1 31.89 36.82 -4.93 43.12  
 
DEGREE DAYS  
HEATING  
YESTERDAY 43 41 2 14  
MONTH TO DATE 991 1089 -98 939  
SINCE DEC 1 991 1089 -98 939  
SINCE JUL 1 2162 2343 -181 2315  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 943 814 129 1003    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION SE (140)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION S (170)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION S (160)  
AVERAGE WIND SPEED 8.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FREEZING RAIN  
LT FREEZING RAIN  
HEAVY SNOW  
SNOW  
LIGHT SNOW  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
HAZE  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 32 59 2002  
MINIMUM TEMPERATURE (F) 16 -6 2017  
 
SUNRISE AND SUNSET  
DECEMBER 30 2020......SUNRISE 7:21 AM CST SUNSET 4:31 PM CST  
DECEMBER 31 2020......SUNRISE 7:21 AM CST SUNSET 4:32 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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