531  
CDUS43 KLOT 202133  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
433 PM CDT SAT JUL 20 2024  
   
...............................  
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR JULY 20 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 81 1:12 PM 101 1980 85 -4 87  
MINIMUM 63 4:40 AM 53 1970 67 -4 68  
AVERAGE 72 76 -4 78  
 
PRECIPITATION (IN)  
TODAY 0.00 3.03 1978 0.12 -0.12 0.00  
MONTH TO DATE 5.55 2.29 3.26 5.77  
SINCE JUN 1 8.65 6.39 2.26 8.13  
SINCE JAN 1 23.92 21.04 2.88 21.09  
 
SNOWFALL (IN)  
TODAY 0.0 T 1978 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE JUN 1 T 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 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 6 31 -25 25  
SINCE JUL 1 0 0 0 0  
 
COOLING  
TODAY 7 11 -4 13  
MONTH TO DATE 199 211 -12 201  
SINCE JUN 1 477 410 67 406  
SINCE JAN 1 557 480 77 499    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION E (80)  
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION SW (220)  
AVERAGE WIND SPEED 3.0  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 78 6:00 AM  
LOWEST 42 1:00 PM  
AVERAGE 60  
   
......................................................  
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 85 103 1901  
MINIMUM TEMPERATURE (F) 67 51 1970  
 
SUNRISE AND SUNSET  
JULY 20 2024..........SUNRISE 5:34 AM CDT SUNSET 8:21 PM CDT  
JULY 21 2024..........SUNRISE 5:35 AM CDT SUNSET 8:21 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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