273  
CDUS43 KLOT 050637  
CLIMDW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
137 AM CDT FRI SEP 05 2025  
   
...............................
 
 
   
..THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR SEPTEMBER 4 2025
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1928 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 67 4:27 PM 95 1954 80 -13 84  
1960  
MINIMUM 50 6:05 AM 43 1938 63 -13 60  
AVERAGE 59 71 -12 72  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 3.05 2008 0.11 -0.11 0.00  
MONTH TO DATE 0.06 0.44 -0.38 0.00  
SINCE SEP 1 0.06 0.44 -0.38 0.00  
SINCE JAN 1 24.88 24.47 0.41 29.47  
 
DEGREE DAYS  
HEATING  
YESTERDAY 6 0 6 0  
MONTH TO DATE 6 0 6 0  
SINCE SEP 1 6 0 6 0  
SINCE JUL 1 8 4 4 0  
 
COOLING  
YESTERDAY 0 7 -7 7  
MONTH TO DATE 11 29 -18 20  
SINCE SEP 1 11 29 -18 20  
SINCE JAN 1 1152 985 167 1143    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION SW (240)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION SW (230)  
AVERAGE WIND SPEED 9.7  
 
SKY COVER  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 77 5:00 AM  
LOWEST 38 12:00 PM  
AVERAGE 58  
   
......................................................
 
 
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 80 97 1954  
MINIMUM TEMPERATURE (F) 63 48 1935  
1974  
1988  
 
SUNRISE AND SUNSET  
SEPTEMBER 5 2025.....SUNRISE 6:21 AM CDT SUNSET 7:17 PM CDT  
SEPTEMBER 6 2025.....SUNRISE 6:22 AM CDT SUNSET 7:15 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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