615  
CDUS43 KLOT 200643  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
143 AM CDT WED MAR 20 2024  
   
...............................
 
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR MARCH 19 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 58 3:18 PM 78 1921 48 10 40  
2012  
MINIMUM 29 5:26 AM 0 1923 32 -3 19  
AVERAGE 44 40 4 30  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.50 1948 0.08 -0.08 0.00  
MONTH TO DATE 2.16 1.46 0.70 1.40  
SINCE MAR 1 2.16 1.46 0.70 1.40  
SINCE JAN 1 6.31 5.42 0.89 7.83  
 
SNOWFALL (IN)  
YESTERDAY 0.0 4.1 1986 0.1 -0.1 0.0  
MONTH TO DATE T 4.2 -4.2 1.8  
SINCE MAR 1 T 4.2 -4.2 1.8  
SINCE JUL 1 21.2 35.8 -14.6 19.7  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 21 25 -4 35  
MONTH TO DATE 357 534 -177 536  
SINCE MAR 1 357 534 -177 536  
SINCE JUL 1 4045 5003 -958 4571  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE MAR 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 29 HIGHEST WIND DIRECTION W (250)  
HIGHEST GUST SPEED 42 HIGHEST GUST DIRECTION W (260)  
AVERAGE WIND SPEED 14.4  
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 62 11:00 PM  
LOWEST 30 6:00 PM  
AVERAGE 46  
   
......................................................
 
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 49 85 2012  
MINIMUM TEMPERATURE (F) 32 4 1885  
 
SUNRISE AND SUNSET  
MARCH 20 2024.........SUNRISE 6:54 AM CDT SUNSET 7:04 PM CDT  
MARCH 21 2024.........SUNRISE 6:52 AM CDT SUNSET 7:06 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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