189  
CDUS43 KLOT 232134  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
434 PM CDT MON SEP 23 2024  
   
...............................  
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 23 2024  
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 67 1:42 PM 95 2017 73 -6 81  
MINIMUM 60 7:15 AM 29 1995 54 6 65  
AVERAGE 64 64 0 73  
 
PRECIPITATION (IN)  
TODAY 0.00 2.09 1961 0.10 -0.10 0.00  
MONTH TO DATE 0.86 2.48 -1.62 2.86  
SINCE SEP 1 0.86 2.48 -1.62 2.86  
SINCE JAN 1 27.72 29.19 -1.47 27.12  
 
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 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  
TODAY 1 4 -3 0  
MONTH TO DATE 15 41 -26 13  
SINCE SEP 1 15 41 -26 13  
SINCE JUL 1 15 47 -32 15  
 
COOLING  
TODAY 0 2 -2 8  
MONTH TO DATE 167 104 63 128  
SINCE SEP 1 167 104 63 128  
SINCE JAN 1 1153 976 177 1062    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION NE (30)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION NE (30)  
AVERAGE WIND SPEED 10.8  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 84 12:00 AM  
LOWEST 59 11:00 AM  
AVERAGE 72  
   
......................................................  
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 93 2017  
MINIMUM TEMPERATURE (F) 54 35 1942  
1985  
1989  
 
SUNRISE AND SUNSET  
SEPTEMBER 23 2024.....SUNRISE 6:41 AM CDT SUNSET 6:46 PM CDT  
SEPTEMBER 24 2024.....SUNRISE 6:42 AM CDT SUNSET 6:44 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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