748  
CDUS43 KLOT 290633  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
133 AM CDT WED OCT 29 2025  
   
...............................  
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 28 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 58 6:39 PM 80 1999 57 1 67  
MINIMUM 47 6:27 AM 19 1925 41 6 43  
AVERAGE 53 49 4 55  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.53 1874 0.11 -0.11 0.00  
MONTH TO DATE 2.53 3.12 -0.59 1.15  
SINCE SEP 1 3.02 6.31 -3.29 2.47  
SINCE JAN 1 25.47 33.02 -7.55 29.33  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.2 1920 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.1 -0.1 0.0  
SINCE SEP 1 0.0 0.1 -0.1 0.0  
SINCE JUL 1 0.0 0.1 -0.1 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 12 16 -4 10  
MONTH TO DATE 211 307 -96 186  
SINCE SEP 1 243 384 -141 201  
SINCE JUL 1 248 390 -142 201  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 57 12 45 16  
SINCE SEP 1 223 128 95 206  
SINCE JAN 1 1215 1000 215 1192    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION E (110)  
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION E (110)  
AVERAGE WIND SPEED 12.1  
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 80 4:00 AM  
LOWEST 37 6:00 PM  
AVERAGE 59  
   
......................................................  
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 57 82 2024  
MINIMUM TEMPERATURE (F) 41 19 1925  
 
SUNRISE AND SUNSET  
OCTOBER 29 2025.......SUNRISE 7:21 AM CDT SUNSET 5:49 PM CDT  
OCTOBER 30 2025.......SUNRISE 7:22 AM CDT SUNSET 5:48 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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