199  
CDUS43 KLOT 120632  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
1232 AM CST THU DEC 12 2024  
   
...............................  
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 11 2024  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1871 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 32 1:12 PM 61 1949 38 -6 36  
MINIMUM 11 11:59 PM -5 1972 26 -15 28  
AVERAGE 22 32 -10 32  
 
PRECIPITATION (IN)  
YESTERDAY T 1.73 1949 0.07 -0.07 T  
MONTH TO DATE T 0.83 -0.83 1.30  
SINCE DEC 1 T 0.83 -0.83 1.30  
SINCE JAN 1 32.99 36.58 -3.59 32.06  
 
SNOWFALL (IN)  
YESTERDAY T 9.5 2000 0.2 -0.2 T  
MONTH TO DATE 0.2 2.4 -2.2 0.3  
SINCE DEC 1 0.2 2.4 -2.2 0.3  
SINCE JUL 1 3.1 4.4 -1.3 3.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 43 33 10 33  
MONTH TO DATE 386 349 37 279  
SINCE DEC 1 386 349 37 279  
SINCE JUL 1 1153 1500 -347 1243  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 1212 1003 209 1145    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 29 HIGHEST WIND DIRECTION W (280)  
HIGHEST GUST SPEED 41 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 13.9  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT SNOW  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 72 9:00 AM  
LOWEST 41 5:00 PM  
AVERAGE 57  
   
......................................................  
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 37 61 1877  
MINIMUM TEMPERATURE (F) 25 -8 2000  
 
SUNRISE AND SUNSET  
DECEMBER 12 2024......SUNRISE 7:11 AM CST SUNSET 4:20 PM CST  
DECEMBER 13 2024......SUNRISE 7:11 AM CST SUNSET 4:21 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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