058  
CDUS43 KLOT 200635  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
135 AM CDT WED SEP 20 2017  
 
   
...............................
 
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 19 2017...  
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1997 TO 2017  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 79 313 PM 89 2013 75 4 87  
MINIMUM 62 1159 PM 38 2012 51 11 53  
AVERAGE 71 63 8 70  
 
PRECIPITATION (IN)  
YESTERDAY 0.12 2.60 0.10 0.02 0.00  
MONTH TO DATE 0.30 2.04 -1.74 0.66  
SINCE SEP 1 0.30 2.04 -1.74 0.66  
SINCE JAN 1 26.86 27.67 -0.81 26.92  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 4 -4 0  
MONTH TO DATE 59 38 21 1  
SINCE SEP 1 59 38 21 1  
SINCE JUL 1 71 47 24 2  
 
COOLING  
YESTERDAY 6 2 4 5  
MONTH TO DATE 35 65 -30 99  
SINCE SEP 1 35 65 -30 99  
SINCE JAN 1 585 789 -204 945    
..............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION E (70)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION E (70)  
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION E (80)  
AVERAGE WIND SPEED 5.5  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
RAIN  
LIGHT RAIN  
FOG  
HAZE  
 
   
......................................................
 
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 74 85 1998  
MINIMUM TEMPERATURE (F) 51 40 2003  
 
 
SUNRISE AND SUNSET  
SEPTEMBER 20 2017.....SUNRISE 639 AM CDT SUNSET 653 PM CDT  
SEPTEMBER 21 2017.....SUNRISE 640 AM CDT SUNSET 652 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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