422  
CDUS43 KLOT 272135  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
435 PM CDT FRI SEP 27 2024  
   
...............................
 
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 27 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 72 2:29 PM 91 1971 71 1 72  
MINIMUM 65 4:07 AM 31 1942 53 12 63  
AVERAGE 69 62 7 68  
 
PRECIPITATION (IN)  
TODAY 0.00 2.28 2019 0.10 -0.10 0.02  
MONTH TO DATE 1.31 2.90 -1.59 3.35  
SINCE SEP 1 1.31 2.90 -1.59 3.35  
SINCE JAN 1 28.17 29.61 -1.44 27.61  
 
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 0 5 -5 0  
MONTH TO DATE 15 59 -44 13  
SINCE SEP 1 15 59 -44 13  
SINCE JUL 1 15 65 -50 15  
 
COOLING  
TODAY 4 2 2 3  
MONTH TO DATE 175 112 63 143  
SINCE SEP 1 175 112 63 143  
SINCE JAN 1 1161 984 177 1077    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 31 HIGHEST WIND DIRECTION NE (30)  
HIGHEST GUST SPEED 40 HIGHEST GUST DIRECTION N (20)  
AVERAGE WIND SPEED 17.3  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 81 4:00 AM  
LOWEST 59 12:00 PM  
AVERAGE 70  
   
......................................................
 
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 71 92 1953  
MINIMUM TEMPERATURE (F) 52 29 1942  
 
SUNRISE AND SUNSET  
SEPTEMBER 27 2024.....SUNRISE 6:45 AM CDT SUNSET 6:39 PM CDT  
SEPTEMBER 28 2024.....SUNRISE 6:46 AM CDT SUNSET 6:37 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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