726  
CDUS43 KLOT 210632  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
1232 AM CST FRI FEB 21 2025  
   
...............................  
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR FEBRUARY 20 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 24 4:06 PM 70 2017 37 -13 57  
MINIMUM 4 6:40 AM -9 1896 23 -19 29  
AVERAGE 14 30 -16 43  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.10 2018 0.07 -0.07 0.00  
MONTH TO DATE 0.41 1.32 -0.91 0.10  
SINCE DEC 1 4.32 5.42 -1.10 6.57  
SINCE JAN 1 2.39 3.31 -0.92 3.60  
 
SNOWFALL (IN)  
YESTERDAY 0.0 2.8 1989 0.4 -0.4 0.0  
MONTH TO DATE 4.9 8.1 -3.2 T  
SINCE DEC 1 11.9 27.0 -15.1 17.3  
SINCE JUL 1 14.8 29.0 -14.2 20.0  
SNOW DEPTH 2  
 
DEGREE DAYS  
HEATING  
YESTERDAY 51 35 16 22  
MONTH TO DATE 833 752 81 556  
SINCE DEC 1 3152 3055 97 2547  
SINCE JUL 1 3919 4206 -287 3511  
 
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 17 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 9.6  
 
SKY COVER  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 70 10:00 PM  
LOWEST 52 12:00 PM  
AVERAGE 61  
   
......................................................  
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 38 67 1930  
MINIMUM TEMPERATURE (F) 24 -11 1873  
 
SUNRISE AND SUNSET  
FEBRUARY 21 2025......SUNRISE 6:38 AM CST SUNSET 5:32 PM CST  
FEBRUARY 22 2025......SUNRISE 6:37 AM CST SUNSET 5:34 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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