547  
CDUS43 KLOT 080829  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
329 AM CDT WED OCT 08 2025  
   
...............................
 
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 7 2025
 
 
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)  
YESTERDAY  
MAXIMUM 66 3:32 PM 87 2007 67 -1 68  
MINIMUM 53 11:51 PM 29 2001 49 4 48  
AVERAGE 60 58 2 58  
 
PRECIPITATION (IN)  
YESTERDAY 0.95 1.39 1930 0.11 0.84 0.00  
MONTH TO DATE 1.35 0.78 0.57 0.01  
SINCE SEP 1 1.84 3.97 -2.13 1.33  
SINCE JAN 1 24.29 30.68 -6.39 28.19  
 
SNOWFALL (IN)  
YESTERDAY 0.0 T 2000 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  
YESTERDAY 5 8 -3 7  
MONTH TO DATE 5 51 -46 15  
SINCE SEP 1 37 128 -91 30  
SINCE JUL 1 42 134 -92 30  
 
COOLING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 55 7 48 9  
SINCE SEP 1 221 123 98 199  
SINCE JAN 1 1213 995 218 1185    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION N (350)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION N (350)  
AVERAGE WIND SPEED 9.4  
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 12:00 AM  
LOWEST 38 4:00 PM  
AVERAGE 68  
   
......................................................
 
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 88 1997  
MINIMUM TEMPERATURE (F) 48 27 1987  
 
SUNRISE AND SUNSET  
OCTOBER 8 2025.......SUNRISE 6:57 AM CDT SUNSET 6:21 PM CDT  
OCTOBER 9 2025.......SUNRISE 6:58 AM CDT SUNSET 6:19 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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