683  
CDUS43 KLOT 212136  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
436 PM CDT SUN APR 21 2024  
   
...............................
 
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR APRIL 21 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 57 2:59 PM 88 1985 61 -4 63  
MINIMUM 33 5:42 AM 27 1986 42 -9 44  
AVERAGE 45 52 -7 54  
 
PRECIPITATION (IN)  
TODAY 0.00 1.08 1973 0.13 -0.13 0.00  
MONTH TO DATE 2.04 2.48 -0.44 1.51  
SINCE MAR 1 5.63 4.93 0.70 5.31  
SINCE JAN 1 9.78 8.89 0.89 11.74  
 
SNOWFALL (IN)  
TODAY 0.0 0.6 1903 0.0 0.0 0.0  
MONTH TO DATE T 1.1 -1.1 0.4  
SINCE MAR 1 1.0 6.6 -5.6 2.2  
SINCE JUL 1 22.2 38.2 -16.0 20.1  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 20 14 6 11  
MONTH TO DATE 288 361 -73 240  
SINCE MAR 1 930 1169 -239 1042  
SINCE JUL 1 4618 5638 -1020 5077  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 3 0 3 25  
SINCE MAR 1 3 2 1 25  
SINCE JAN 1 3 2 1 25    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION NW (300)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION NW (300)  
AVERAGE WIND SPEED 8.3  
 
SKY COVER  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 69 5:00 AM  
LOWEST 30 2:00 PM  
AVERAGE 50  
   
......................................................
 
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 62 91 1980  
MINIMUM TEMPERATURE (F) 43 24 1986  
 
SUNRISE AND SUNSET  
APRIL 21 2024.........SUNRISE 6:01 AM CDT SUNSET 7:40 PM CDT  
APRIL 22 2024.........SUNRISE 6:00 AM CDT SUNSET 7:41 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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