309  
CDUS43 KLOT 232236  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
436 PM CST THU JAN 23 2025  
   
...............................  
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR JANUARY 23 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 24 6:33 AM 65 1909 31 -7 37  
MINIMUM 15 9:52 AM -18 1963 18 -3 33  
AVERAGE 20 24 -4 35  
 
PRECIPITATION (IN)  
TODAY 0.01 0.89 1999 0.07 -0.06 0.36  
MONTH TO DATE 0.23 1.53 -1.30 2.61  
SINCE DEC 1 2.16 3.64 -1.48 5.58  
SINCE JAN 1 0.23 1.53 -1.30 2.61  
 
SNOWFALL (IN)  
TODAY 0.3 4.5 1897 0.4 -0.1 0.0  
MONTH TO DATE 4.6 8.1 -3.5 16.1  
SINCE DEC 1 7.0 15.7 -8.7 17.3  
SINCE JUL 1 9.9 17.7 -7.8 20.0  
SNOW DEPTH 1  
 
DEGREE DAYS  
HEATING  
TODAY 45 40 5 30  
MONTH TO DATE 1034 908 126 971  
SINCE DEC 1 2047 1977 70 1769  
SINCE JUL 1 2814 3128 -314 2733  
 
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 17 HIGHEST WIND DIRECTION N (340)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 10.6  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT SNOW  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 88 1:00 AM  
LOWEST 49 3:00 PM  
AVERAGE 69  
   
......................................................  
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 31 65 1967  
MINIMUM TEMPERATURE (F) 18 -15 1897  
 
SUNRISE AND SUNSET  
JANUARY 23 2025.......SUNRISE 7:12 AM CST SUNSET 4:55 PM CST  
JANUARY 24 2025.......SUNRISE 7:11 AM CST SUNSET 4:57 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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