838  
CDUS43 KLOT 042234  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
434 PM CST WED DEC 04 2024  
   
...............................  
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 4 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 39 3:59 PM 66 1998 40 -1 41  
MINIMUM 24 1:28 AM 0 1893 27 -3 32  
AVERAGE 32 34 -2 37  
 
PRECIPITATION (IN)  
TODAY 0.00 1.19 1973 0.08 -0.08 0.00  
MONTH TO DATE 0.00 0.31 -0.31 0.94  
SINCE DEC 1 0.00 0.31 -0.31 0.94  
SINCE JAN 1 32.99 36.06 -3.07 31.70  
 
SNOWFALL (IN)  
TODAY 0.0 6.4 2016 0.2 -0.2 0.0  
MONTH TO DATE 0.0 0.8 -0.8 0.0  
SINCE DEC 1 0.0 0.8 -0.8 0.0  
SINCE JUL 1 2.9 2.8 0.1 2.7  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 33 31 2 28  
MONTH TO DATE 162 122 40 102  
SINCE DEC 1 162 122 40 102  
SINCE JUL 1 929 1273 -344 1066  
 
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 25 HIGHEST WIND DIRECTION SW (240)  
HIGHEST GUST SPEED 38 HIGHEST GUST DIRECTION SW (220)  
AVERAGE WIND SPEED 16.2  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 77 12:00 AM  
LOWEST 59 1:00 PM  
AVERAGE 68  
   
......................................................  
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 40 68 2001  
MINIMUM TEMPERATURE (F) 27 4 2005  
 
SUNRISE AND SUNSET  
DECEMBER 4 2024......SUNRISE 7:04 AM CST SUNSET 4:20 PM CST  
DECEMBER 5 2024......SUNRISE 7:05 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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