677  
CDUS43 KLOT 100640  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
1240 AM CST FRI JAN 10 2025  
   
...............................
 
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR JANUARY 9 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 29 3:38 PM 60 1880 32 -3 36  
MINIMUM 14 7:53 AM -20 1875 19 -5 33  
AVERAGE 22 26 -4 35  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.93 2024 0.07 -0.07 0.93  
MONTH TO DATE 0.02 0.61 -0.59 1.25  
SINCE DEC 1 1.95 2.72 -0.77 4.22  
SINCE JAN 1 0.02 0.61 -0.59 1.25  
 
SNOWFALL (IN)  
YESTERDAY 0.0 6.8 1977 0.4 -0.4 2.8  
MONTH TO DATE 0.4 2.9 -2.5 6.7  
SINCE DEC 1 2.8 10.5 -7.7 7.9  
SINCE JUL 1 5.7 12.5 -6.8 10.6  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 43 39 4 30  
MONTH TO DATE 379 348 31 291  
SINCE DEC 1 1392 1417 -25 1089  
SINCE JUL 1 2159 2568 -409 2053  
 
COOLING  
YESTERDAY 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 18 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 8.3  
 
SKY COVER  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 71 7:00 PM  
LOWEST 44 12:00 PM  
AVERAGE 58  
   
......................................................
 
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 32 60 1975  
MINIMUM TEMPERATURE (F) 19 -26 1982  
 
SUNRISE AND SUNSET  
JANUARY 10 2025.......SUNRISE 7:19 AM CST SUNSET 4:40 PM CST  
JANUARY 11 2025.......SUNRISE 7:18 AM CST SUNSET 4:41 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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