135  
CDUS43 KLOT 030634  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
1234 AM CST WED DEC 03 2025  
   
...............................
 
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 2 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 24 12:25 AM 71 1982 41 -17 25  
MINIMUM 17 11:46 AM -1 1893 28 -11 14  
1942  
AVERAGE 21 34 -13 20  
 
PRECIPITATION (IN)  
YESTERDAY T 4.47 1982 0.08 -0.08 0.00  
MONTH TO DATE 0.13 0.16 -0.03 0.00  
SINCE DEC 1 0.13 0.16 -0.03 0.00  
SINCE JAN 1 27.85 35.91 -8.06 32.99  
 
SNOWFALL (IN)  
YESTERDAY 0.1 5.6 1991 0.2 -0.1 0.0  
MONTH TO DATE 1.5 0.4 1.1 0.0  
SINCE DEC 1 1.5 0.4 1.1 0.0  
SINCE JUL 1 11.9 2.4 9.5 2.9  
SNOW DEPTH 7  
 
DEGREE DAYS  
HEATING  
YESTERDAY 44 30 14 45  
MONTH TO DATE 85 60 25 89  
SINCE DEC 1 85 60 25 89  
SINCE JUL 1 1054 1211 -157 856  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 1215 1003 212 1212    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 9.2  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT SNOW  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 3:00 AM  
LOWEST 77 12:00 PM  
AVERAGE 87  
   
......................................................
 
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 41 71 1970  
MINIMUM TEMPERATURE (F) 28 -5 1940  
 
SUNRISE AND SUNSET  
DECEMBER 3 2025......SUNRISE 7:02 AM CST SUNSET 4:21 PM CST  
DECEMBER 4 2025......SUNRISE 7:03 AM CST SUNSET 4:20 PM CST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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