375  
CDUS43 KLOT 182134  
CLIMDW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
434 PM CDT WED SEP 18 2024  
   
...............................
 
 
   
..THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR SEPTEMBER 18 2024
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1928 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 89 1:34 PM 94 1955 76 13 71  
MINIMUM 64 5:23 AM 39 1929 58 6 53  
AVERAGE 77 67 10 62  
 
PRECIPITATION (IN)  
TODAY 0.00 3.15 2015 0.09 -0.09 0.00  
MONTH TO DATE T 1.69 -1.69 2.73  
SINCE SEP 1 T 1.69 -1.69 2.73  
SINCE JAN 1 29.47 25.72 3.75 28.34  
 
DEGREE DAYS  
HEATING  
TODAY 0 2 -2 3  
MONTH TO DATE 10 17 -7 13  
SINCE SEP 1 10 17 -7 13  
SINCE JUL 1 10 21 -11 14  
 
COOLING  
TODAY 12 4 8 0  
MONTH TO DATE 139 102 37 89  
SINCE SEP 1 139 102 37 89  
SINCE JAN 1 1262 1058 204 1051    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION E (80)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION E (80)  
AVERAGE WIND SPEED 4.1  
 
SKY COVER  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 84 2:00 AM  
LOWEST 24 2:00 PM  
AVERAGE 54  
   
......................................................
 
 
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 75 93 1955  
MINIMUM TEMPERATURE (F) 58 37 1929  
 
SUNRISE AND SUNSET  
SEPTEMBER 18 2024.....SUNRISE 6:35 AM CDT SUNSET 6:54 PM CDT  
SEPTEMBER 19 2024.....SUNRISE 6:36 AM CDT SUNSET 6:52 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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