055  
CDUS43 KLOT 122234  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
434 PM CST THU DEC 12 2024  
   
...............................  
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 12 2024  
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 15 12:01 PM 61 1877 37 -22 38  
MINIMUM 4 7:50 AM -8 2000 25 -21 27  
AVERAGE 10 31 -21 33  
 
PRECIPITATION (IN)  
TODAY 0.00 1.76 1972 0.06 -0.06 0.00  
MONTH TO DATE T 0.89 -0.89 1.30  
SINCE DEC 1 T 0.89 -0.89 1.30  
SINCE JAN 1 32.99 36.64 -3.65 32.06  
 
SNOWFALL (IN)  
TODAY 0.0 11.3 1903 0.2 -0.2 0.0  
MONTH TO DATE 0.2 2.6 -2.4 0.3  
SINCE DEC 1 0.2 2.6 -2.4 0.3  
SINCE JUL 1 3.1 4.6 -1.5 3.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 55 34 21 32  
MONTH TO DATE 441 383 58 311  
SINCE DEC 1 441 383 58 311  
SINCE JUL 1 1208 1534 -326 1275  
 
COOLING  
TODAY 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 24 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 35 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 12.5  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 59 7:00 AM  
LOWEST 44 1:00 PM  
AVERAGE 52  
   
......................................................  
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 37 67 1975  
MINIMUM TEMPERATURE (F) 25 -13 1903  
 
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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