211  
CDUS43 KLOT 300633  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
133 AM CDT MON JUN 30 2025  
   
...............................  
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR JUNE 29 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 94 2:28 PM 97 1954 84 10 88  
MINIMUM 73 4:44 AM 48 1989 65 8 70  
AVERAGE 84 74 10 79  
 
PRECIPITATION (IN)  
YESTERDAY 0.03 2.81 1933 0.12 -0.09 0.01  
MONTH TO DATE 3.63 3.98 -0.35 3.10  
SINCE JUN 1 3.63 3.98 -0.35 3.10  
SINCE JAN 1 13.13 18.63 -5.50 18.37  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0 MM 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 T  
SINCE JUN 1 0.0 0.0 0.0 T  
SINCE JUL 1 17.6 38.4 -20.8 22.2  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 13 29 -16 6  
SINCE JUN 1 13 29 -16 6  
SINCE JUL 1 5441 5972 -531 4775  
 
COOLING  
YESTERDAY 19 9 10 14  
MONTH TO DATE 279 188 91 278  
SINCE JUN 1 279 188 91 278  
SINCE JAN 1 313 258 55 358    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION S (160)  
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION S (160)  
AVERAGE WIND SPEED 7.5  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 81 4:00 AM  
LOWEST 43 4:00 PM  
AVERAGE 62  
   
......................................................  
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 84 99 1913  
1953  
MINIMUM TEMPERATURE (F) 65 45 1943  
 
SUNRISE AND SUNSET  
JUNE 30 2025..........SUNRISE 5:20 AM CDT SUNSET 8:31 PM CDT  
JULY 1 2025..........SUNRISE 5:20 AM CDT SUNSET 8:31 PM CDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
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