865  
CDUS43 KLOT 082233  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
533 PM CDT FRI AUG 08 2025  
   
...............................  
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR AUGUST 8 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 92 1:51 PM 100 1934 83 9 83  
MINIMUM 74 5:40 AM 52 1976 66 8 64  
AVERAGE 83 75 8 74  
 
PRECIPITATION (IN)  
TODAY 0.00 2.35 1977 0.13 -0.13 0.00  
MONTH TO DATE 0.00 1.11 -1.11 0.85  
SINCE JUN 1 7.92 8.92 -1.00 9.84  
SINCE JAN 1 17.42 23.57 -6.15 25.11  
 
SNOWFALL (IN)  
TODAY 0.0 0.0 MM 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE JUN 1 0.0 0.0 0.0 T  
SINCE JUL 1 0.0 0.0 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 13 33 -20 6  
SINCE JUL 1 0 2 -2 0  
 
COOLING  
TODAY 18 10 8 9  
MONTH TO DATE 74 80 -6 99  
SINCE JUN 1 763 605 158 693  
SINCE JAN 1 797 675 122 773    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION S (170)  
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION S (170)  
AVERAGE WIND SPEED 9.3  
 
SKY COVER  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 88 2:00 AM  
LOWEST 49 1:00 PM  
AVERAGE 69  
   
......................................................  
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 83 97 1913  
MINIMUM TEMPERATURE (F) 66 51 1972  
 
SUNRISE AND SUNSET  
AUGUST 8 2025........SUNRISE 5:53 AM CDT SUNSET 8:01 PM CDT  
AUGUST 9 2025........SUNRISE 5:54 AM CDT SUNSET 8:00 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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