453  
CDUS43 KLOT 200631  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
131 AM CDT MON MAY 20 2024  
   
...............................
 
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR MAY 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 76 8:59 AM 94 1975 72 4 76  
1977  
MINIMUM 62 11:34 PM 36 1894 52 10 54  
1993  
AVERAGE 69 62 7 65  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.53 1949 0.15 -0.15 0.03  
MONTH TO DATE 3.05 2.81 0.24 0.42  
SINCE MAR 1 10.11 9.01 1.10 6.24  
SINCE JAN 1 14.26 12.97 1.29 12.67  
 
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 MAR 1 1.0 6.8 -5.8 2.3  
SINCE JUL 1 22.2 38.4 -16.2 20.2  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 6 -6 0  
MONTH TO DATE 54 147 -93 108  
SINCE MAR 1 1067 1423 -356 1326  
SINCE JUL 1 4755 5892 -1137 5361  
 
COOLING  
YESTERDAY 4 2 2 0  
MONTH TO DATE 32 26 6 22  
SINCE MAR 1 41 36 5 47  
SINCE JAN 1 41 36 5 47    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NE (40)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION NE (30)  
AVERAGE WIND SPEED 9.1  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 71 4:00 AM  
LOWEST 33 9:00 AM  
AVERAGE 52  
   
......................................................
 
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 95 1977  
MINIMUM TEMPERATURE (F) 52 33 2002  
 
SUNRISE AND SUNSET  
MAY 20 2024...........SUNRISE 5:26 AM CDT SUNSET 8:11 PM CDT  
MAY 21 2024...........SUNRISE 5:25 AM CDT SUNSET 8:12 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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