060  
CDUS43 KLOT 200635  
CLIPWK  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
135 AM CDT WED SEP 20 2017  
 
   
...............................
 
 
   
..THE CHICAGO EXECUTIVE CLIMATE SUMMARY FOR SEPTEMBER 19 2017
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1996 TO 2017  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 77 214 PM 88 2016 73 4 88  
MINIMUM 62 1159 PM 38 2012 53 9 57  
AVERAGE 70 63 7 73  
 
PRECIPITATION (IN)  
YESTERDAY 0.43 2.95 2001 0.10 0.33 0.00  
MONTH TO DATE 0.53 1.98 -1.45 0.23  
SINCE SEP 1 0.53 1.98 -1.45 0.23  
SINCE JAN 1 32.15 24.46 7.69 25.60  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 4 -4 0  
MONTH TO DATE 43 37 6 1  
SINCE SEP 1 43 37 6 1  
SINCE JUL 1 49 47 2 3  
 
COOLING  
YESTERDAY 5 2 3 8  
MONTH TO DATE 55 66 -11 100  
SINCE SEP 1 55 66 -11 100  
SINCE JAN 1 690 763 -73 1013    
..............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION NE (50)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION NE (50)  
AVERAGE WIND SPEED 3.6  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
   
......................................................
 
 
 
THE CHICAGO EXECUTIVE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 73 87 1998  
MINIMUM TEMPERATURE (F) 52 42 2006  
 
 
SUNRISE AND SUNSET  
SEPTEMBER 20 2017.....SUNRISE 637 AM CDT SUNSET 652 PM CDT  
SEPTEMBER 21 2017.....SUNRISE 638 AM CDT SUNSET 650 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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