340  
CDUS43 KLOT 230633  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
1233 AM CST SUN FEB 23 2025  
   
...............................
 
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR FEBRUARY 22 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 34 4:04 PM 68 1922 38 -4 61  
2017  
MINIMUM 15 7:20 AM -14 1873 24 -9 42  
AVERAGE 25 31 -6 52  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.20 2023 0.07 -0.07 T  
MONTH TO DATE 0.41 1.47 -1.06 0.10  
SINCE DEC 1 4.32 5.57 -1.25 6.57  
SINCE JAN 1 2.39 3.46 -1.07 3.60  
 
SNOWFALL (IN)  
YESTERDAY 0.0 4.6 1950 0.3 -0.3 0.0  
MONTH TO DATE 4.9 8.8 -3.9 T  
SINCE DEC 1 11.9 27.7 -15.8 17.3  
SINCE JUL 1 14.8 29.7 -14.9 20.0  
SNOW DEPTH 2  
 
DEGREE DAYS  
HEATING  
YESTERDAY 40 34 6 13  
MONTH TO DATE 918 820 98 580  
SINCE DEC 1 3237 3123 114 2571  
SINCE JUL 1 4004 4274 -270 3535  
 
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 22 HIGHEST WIND DIRECTION SW (230)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION SW (230)  
AVERAGE WIND SPEED 11.1  
 
SKY COVER  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 70 6:00 AM  
LOWEST 39 1:00 PM  
AVERAGE 55  
   
......................................................
 
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 39 66 2000  
MINIMUM TEMPERATURE (F) 24 -18 1873  
 
SUNRISE AND SUNSET  
FEBRUARY 23 2025......SUNRISE 6:35 AM CST SUNSET 5:35 PM CST  
FEBRUARY 24 2025......SUNRISE 6:34 AM CST SUNSET 5:36 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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