408  
CDUS43 KLOT 032136  
CLIMDW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
436 PM CDT WED SEP 03 2025  
   
...............................  
 
   
..THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR SEPTEMBER 3 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 73 1:37 PM 97 1953 80 -7 78  
MINIMUM 64 5:47 AM 47 1974 63 1 60  
AVERAGE 69 72 -3 69  
 
PRECIPITATION (IN)  
TODAY T 1.92 1961 0.10 -0.10 0.00  
MONTH TO DATE T 0.33 -0.33 0.00  
SINCE SEP 1 T 0.33 -0.33 0.00  
SINCE JAN 1 24.82 24.36 0.46 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 4 7 -3 4  
MONTH TO DATE 14 22 -8 13  
SINCE SEP 1 14 22 -8 13  
SINCE JAN 1 1155 978 177 1136    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION W (260)  
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION SW (240)  
AVERAGE WIND SPEED 10.3  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 78 3:00 PM  
LOWEST 59 10:00 AM  
AVERAGE 69  
   
......................................................  
 
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 80 95 1954  
1960  
MINIMUM TEMPERATURE (F) 63 43 1938  
 
SUNRISE AND SUNSET  
SEPTEMBER 3 2025.....SUNRISE 6:19 AM CDT SUNSET 7:20 PM CDT  
SEPTEMBER 4 2025.....SUNRISE 6:20 AM CDT SUNSET 7:19 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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