777  
CDUS43 KLOT 252143  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
443 PM CDT WED SEP 25 2024  
   
...............................  
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 25 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 77 2:26 PM 92 2017 72 5 75  
MINIMUM 57 6:10 AM 30 1942 53 4 64  
AVERAGE 67 63 4 70  
 
PRECIPITATION (IN)  
TODAY 0.00 1.85 1961 0.11 -0.11 0.11  
MONTH TO DATE 1.31 2.70 -1.39 2.97  
SINCE SEP 1 1.31 2.70 -1.39 2.97  
SINCE JAN 1 28.17 29.41 -1.24 27.23  
 
SNOWFALL (IN)  
TODAY 0.0 T 1928 0.0 0.0 0.0  
1942  
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 4 -4 0  
MONTH TO DATE 15 49 -34 13  
SINCE SEP 1 15 49 -34 13  
SINCE JUL 1 15 55 -40 15  
 
COOLING  
TODAY 2 2 0 5  
MONTH TO DATE 169 108 61 137  
SINCE SEP 1 169 108 61 137  
SINCE JAN 1 1155 980 175 1071    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION N (340)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION N (10)  
AVERAGE WIND SPEED 5.2  
 
SKY COVER  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 4:00 AM  
LOWEST 42 3:00 PM  
AVERAGE 66  
   
......................................................  
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 92 2017  
MINIMUM TEMPERATURE (F) 53 35 1928  
 
SUNRISE AND SUNSET  
SEPTEMBER 25 2024.....SUNRISE 6:43 AM CDT SUNSET 6:43 PM CDT  
SEPTEMBER 26 2024.....SUNRISE 6:44 AM CDT SUNSET 6:41 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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