896  
CDUS43 KLOT 250633  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
133 AM CDT WED SEP 25 2024  
   
...............................  
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 24 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 67 2:55 PM 93 2017 72 -5 79  
MINIMUM 62 11:59 PM 35 1942 54 8 59  
1985  
1989  
AVERAGE 65 63 2 69  
 
PRECIPITATION (IN)  
YESTERDAY 0.43 1.85 1977 0.11 0.32 0.00  
MONTH TO DATE 1.31 2.59 -1.28 2.86  
SINCE SEP 1 1.31 2.59 -1.28 2.86  
SINCE JAN 1 28.17 29.30 -1.13 27.12  
 
SNOWFALL (IN)  
YESTERDAY 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  
YESTERDAY 0 4 -4 0  
MONTH TO DATE 15 45 -30 13  
SINCE SEP 1 15 45 -30 13  
SINCE JUL 1 15 51 -36 15  
 
COOLING  
YESTERDAY 0 2 -2 4  
MONTH TO DATE 167 106 61 132  
SINCE SEP 1 167 106 61 132  
SINCE JAN 1 1153 978 175 1066    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 6.1  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 1:00 AM  
LOWEST 86 11:00 PM  
AVERAGE 93  
   
......................................................  
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 92 2017  
MINIMUM TEMPERATURE (F) 53 30 1942  
 
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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