845  
CDUS43 KLOT 022147  
CLIMDW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
447 PM CDT TUE SEP 02 2025  
   
...............................
 
 
   
..THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR SEPTEMBER 2 2025
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 80 11:43 AM 101 1953 80 0 75  
MINIMUM 60 5:32 AM 44 1946 64 -4 61  
AVERAGE 70 72 -2 68  
 
PRECIPITATION (IN)  
TODAY 0.00 1.37 1934 0.11 -0.11 0.00  
MONTH TO DATE 0.00 0.23 -0.23 0.00  
SINCE SEP 1 0.00 0.23 -0.23 0.00  
SINCE JAN 1 24.82 24.26 0.56 29.47  
 
DEGREE DAYS  
HEATING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE SEP 1 0 0 0 0  
SINCE JUL 1 2 4 -2 0  
 
COOLING  
TODAY 5 7 -2 3  
MONTH TO DATE 10 15 -5 9  
SINCE SEP 1 10 15 -5 9  
SINCE JAN 1 1151 971 180 1132    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION E (90)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION NE (40)  
AVERAGE WIND SPEED 3.2  
 
SKY COVER  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 83 5:00 AM  
LOWEST 38 12:00 PM  
AVERAGE 61  
   
......................................................
 
 
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 80 97 1953  
MINIMUM TEMPERATURE (F) 63 47 1974  
 
SUNRISE AND SUNSET  
SEPTEMBER 2 2025.....SUNRISE 6:18 AM CDT SUNSET 7:22 PM CDT  
SEPTEMBER 3 2025.....SUNRISE 6:19 AM CDT SUNSET 7:20 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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