120  
CDUS43 KLOT 142134  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
434 PM CDT SUN SEP 14 2025  
   
...............................
 
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 14 2025
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1871 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 82 1:32 PM 99 1939 76 6 88  
MINIMUM 64 5:18 AM 40 1985 58 6 67  
AVERAGE 73 67 6 78  
 
PRECIPITATION (IN)  
TODAY 0.00 2.42 1896 0.10 -0.10 0.00  
MONTH TO DATE 0.28 1.53 -1.25 0.04  
SINCE SEP 1 0.28 1.53 -1.25 0.04  
SINCE JAN 1 22.73 28.24 -5.51 26.90  
 
SNOWFALL (IN)  
TODAY 0.0 T 1928 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE SEP 1 0.0 0.0 0.0 0.0  
SINCE JUL 1 0.0 0.0 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 0 2 -2 0  
MONTH TO DATE 32 14 18 14  
SINCE SEP 1 32 14 18 14  
SINCE JUL 1 37 20 17 14  
 
COOLING  
TODAY 8 4 4 13  
MONTH TO DATE 40 75 -35 76  
SINCE SEP 1 40 75 -35 76  
SINCE JAN 1 1032 947 85 1062    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION E (80)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION E (80)  
AVERAGE WIND SPEED 7.2  
 
SKY COVER  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 5:00 AM  
LOWEST 55 1:00 PM  
AVERAGE 76  
   
......................................................
 
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 76 99 1939  
MINIMUM TEMPERATURE (F) 58 39 2007  
 
SUNRISE AND SUNSET  
SEPTEMBER 14 2025.....SUNRISE 6:31 AM CDT SUNSET 7:02 PM CDT  
SEPTEMBER 15 2025.....SUNRISE 6:32 AM CDT SUNSET 7:01 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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