253  
CDUS43 KLOT 150632  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
132 AM CDT SUN SEP 15 2024  
   
...............................  
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 14 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 88 12:21 PM 99 1939 76 12 74  
MINIMUM 67 5:12 AM 40 1985 58 9 53  
AVERAGE 78 67 11 64  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.42 1896 0.10 -0.10 0.00  
MONTH TO DATE 0.04 1.53 -1.49 0.89  
SINCE SEP 1 0.04 1.53 -1.49 0.89  
SINCE JAN 1 26.90 28.24 -1.34 25.15  
 
SNOWFALL (IN)  
YESTERDAY 0.0 T 1928 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 0 2 -2 1  
MONTH TO DATE 14 14 0 5  
SINCE SEP 1 14 14 0 5  
SINCE JUL 1 14 20 -6 7  
 
COOLING  
YESTERDAY 13 4 9 0  
MONTH TO DATE 76 75 1 94  
SINCE SEP 1 76 75 1 94  
SINCE JAN 1 1062 947 115 1028    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION E (100)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION E (80)  
AVERAGE WIND SPEED 5.3  
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 79 11:00 PM  
LOWEST 45 1:00 PM  
AVERAGE 62  
   
......................................................  
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 76 99 1939  
MINIMUM TEMPERATURE (F) 58 39 2007  
 
SUNRISE AND SUNSET  
SEPTEMBER 15 2024.....SUNRISE 6:32 AM CDT SUNSET 7:00 PM CDT  
SEPTEMBER 16 2024.....SUNRISE 6:33 AM CDT SUNSET 6:58 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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