571  
CDUS43 KLOT 080631  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
131 AM CDT SUN SEP 08 2024  
   
...............................
 
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 7 2024
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1871 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 67 1:38 PM 100 1939 79 -12 71  
1960  
MINIMUM 48 5:46 AM 42 1986 61 -13 64  
AVERAGE 58 70 -12 68  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.79 1980 0.11 -0.11 0.03  
MONTH TO DATE 0.04 0.81 -0.77 0.10  
SINCE SEP 1 0.04 0.81 -0.77 0.10  
SINCE JAN 1 26.90 27.52 -0.62 24.36  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0 MM 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE SEP 1 0.0 0.0 0.0 0.0  
SINCE JUL 1 0.0 0.0 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 7 1 6 0  
MONTH TO DATE 10 4 6 0  
SINCE SEP 1 10 4 6 0  
SINCE JUL 1 10 10 0 2  
 
COOLING  
YESTERDAY 0 6 -6 3  
MONTH TO DATE 25 43 -18 88  
SINCE SEP 1 25 43 -18 88  
SINCE JAN 1 1011 915 96 1022    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION N (360)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION N (10)  
AVERAGE WIND SPEED 9.0  
 
SKY COVER  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 77 11:00 PM  
LOWEST 38 2:00 PM  
AVERAGE 58  
   
......................................................
 
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 78 96 1933  
1959  
1960  
MINIMUM TEMPERATURE (F) 60 43 1986  
 
SUNRISE AND SUNSET  
SEPTEMBER 8 2024.....SUNRISE 6:25 AM CDT SUNSET 7:12 PM CDT  
SEPTEMBER 9 2024.....SUNRISE 6:26 AM CDT SUNSET 7:11 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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