801  
CDUS43 KLOT 250641  
CLIMDW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
135 AM CDT MON SEP 25 2017  
 
   
...............................
 
 
   
..THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR SEPTEMBER 24 2017
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1928 TO 2017  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 92R 230 PM 91 2007 72 20 76  
MINIMUM 73 614 AM 30 1928 54 19 67  
AVERAGE 83 63 20 72  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.85 1977 0.11 -0.11 0.00  
MONTH TO DATE 0.56 2.70 -2.14 0.58  
SINCE SEP 1 0.56 2.70 -2.14 0.58  
SINCE JAN 1 28.61 29.25 -0.64 25.23  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 4 -4 0  
MONTH TO DATE 18 47 -29 0  
SINCE SEP 1 18 47 -29 0  
SINCE JUL 1 23 52 -29 0  
 
COOLING  
YESTERDAY 18 2 16 7  
MONTH TO DATE 168 109 59 218  
SINCE SEP 1 168 109 59 218  
SINCE JAN 1 1074 1019 55 1410    
..............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION SE (150)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION E (110)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION SE (130)  
AVERAGE WIND SPEED 6.2  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HAZE  
 
   
......................................................
 
 
 
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 91 1986  
1933  
MINIMUM TEMPERATURE (F) 53 30 1942  
 
 
SUNRISE AND SUNSET  
SEPTEMBER 25 2017.....SUNRISE 642 AM CDT SUNSET 643 PM CDT  
SEPTEMBER 26 2017.....SUNRISE 643 AM CDT SUNSET 641 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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