427  
CDUS43 KLOT 250634  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
1234 AM CST TUE FEB 25 2025  
   
...............................  
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR FEBRUARY 24 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 53 3:44 PM 64 1930 39 14 35  
MINIMUM 38 3:16 AM -11 1873 25 13 20  
AVERAGE 46 32 14 28  
 
PRECIPITATION (IN)  
YESTERDAY T 1.11 2001 0.08 -0.08 0.00  
MONTH TO DATE 0.41 1.64 -1.23 0.18  
SINCE DEC 1 4.32 5.74 -1.42 6.65  
SINCE JAN 1 2.39 3.63 -1.24 3.68  
 
SNOWFALL (IN)  
YESTERDAY 0.0 6.5 1965 0.4 -0.4 0.0  
MONTH TO DATE 4.9 9.5 -4.6 1.2  
SINCE DEC 1 11.9 28.4 -16.5 18.5  
SINCE JUL 1 14.8 30.4 -15.6 21.2  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 19 33 -14 37  
MONTH TO DATE 967 887 80 642  
SINCE DEC 1 3286 3190 96 2633  
SINCE JUL 1 4053 4341 -288 3597  
 
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 21 HIGHEST WIND DIRECTION W (250)  
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION SW (220)  
AVERAGE WIND SPEED 11.9  
 
SKY COVER  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 74 10:00 PM  
LOWEST 58 12:00 PM  
AVERAGE 66  
   
......................................................  
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 39 72 2000  
MINIMUM TEMPERATURE (F) 25 -9 1900  
 
SUNRISE AND SUNSET  
FEBRUARY 25 2025......SUNRISE 6:32 AM CST SUNSET 5:37 PM CST  
FEBRUARY 26 2025......SUNRISE 6:31 AM CST SUNSET 5:39 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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