849  
CDUS43 KLOT 032240  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
440 PM CST FRI JAN 03 2025  
   
...............................  
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR JANUARY 3 2025  
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 25 3:23 PM 60 1874 33 -8 36  
1950  
MINIMUM 20 8:44 AM -18 1879 20 0 31  
AVERAGE 23 26 -3 34  
 
PRECIPITATION (IN)  
TODAY T 1.24 1897 0.07 -0.07 T  
MONTH TO DATE 0.01 0.20 -0.19 T  
SINCE DEC 1 1.94 2.31 -0.37 2.97  
SINCE JAN 1 0.01 0.20 -0.19 T  
 
SNOWFALL (IN)  
TODAY 0.2 7.1 1971 0.3 -0.1 T  
MONTH TO DATE 0.3 0.9 -0.6 T  
SINCE DEC 1 2.7 8.5 -5.8 1.2  
SINCE JUL 1 5.6 10.5 -4.9 3.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 42 38 4 31  
MONTH TO DATE 115 114 1 98  
SINCE DEC 1 1128 1183 -55 896  
SINCE JUL 1 1895 2334 -439 1860  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION NW (300)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 12.5  
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT SNOW  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 85 5:00 AM  
LOWEST 47 4:00 PM  
AVERAGE 66  
   
......................................................  
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 32 64 1997  
MINIMUM TEMPERATURE (F) 20 -14 1884  
 
SUNRISE AND SUNSET  
JANUARY 3 2025.......SUNRISE 7:20 AM CST SUNSET 4:33 PM CST  
JANUARY 4 2025.......SUNRISE 7:20 AM CST SUNSET 4:34 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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