882  
CDUS43 KLOT 120632  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
132 AM CDT THU SEP 12 2024  
   
...............................  
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 11 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 87 2:09 PM 95 1952 77 10 70  
MINIMUM 59 5:55 AM 42 1993 59 0 61  
AVERAGE 73 68 5 66  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.37 2000 0.11 -0.11 0.77  
MONTH TO DATE 0.04 1.23 -1.19 0.89  
SINCE SEP 1 0.04 1.23 -1.19 0.89  
SINCE JAN 1 26.90 27.94 -1.04 25.15  
 
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 MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 14 8 6 2  
SINCE SEP 1 14 8 6 2  
SINCE JUL 1 14 14 0 4  
 
COOLING  
YESTERDAY 8 5 3 1  
MONTH TO DATE 42 63 -21 94  
SINCE SEP 1 42 63 -21 94  
SINCE JAN 1 1028 935 93 1028    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION S (180)  
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION SE (140)  
AVERAGE WIND SPEED 3.3  
 
SKY COVER  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 75 6:00 AM  
LOWEST 27 4:00 PM  
AVERAGE 51  
   
......................................................  
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 77 96 1952  
MINIMUM TEMPERATURE (F) 59 44 1955  
2014  
 
SUNRISE AND SUNSET  
SEPTEMBER 12 2024.....SUNRISE 6:29 AM CDT SUNSET 7:05 PM CDT  
SEPTEMBER 13 2024.....SUNRISE 6:30 AM CDT SUNSET 7:04 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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