814  
CDUS43 KLOT 122137  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
437 PM CDT SUN MAY 12 2024  
   
...............................  
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR MAY 12 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 83 2:59 PM 92 1956 69 14 77  
MINIMUM 49 4:57 AM 31 1981 49 0 57  
AVERAGE 66 59 7 67  
 
PRECIPITATION (IN)  
TODAY 0.00 2.67 1935 0.15 -0.15 0.08  
MONTH TO DATE 2.42 1.77 0.65 0.37  
SINCE MAR 1 9.48 7.97 1.51 6.19  
SINCE JAN 1 13.63 11.93 1.70 12.62  
 
SNOWFALL (IN)  
TODAY 0.0 T 1923 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  
TODAY 0 7 -7 0  
MONTH TO DATE 40 103 -63 77  
SINCE MAR 1 1053 1379 -326 1295  
SINCE JUL 1 4741 5848 -1107 5330  
 
COOLING  
TODAY 1 1 0 2  
MONTH TO DATE 9 12 -3 21  
SINCE MAR 1 18 22 -4 46  
SINCE JAN 1 18 22 -4 46    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 7.0  
 
SKY COVER  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 86 5:00 AM  
LOWEST 31 1:00 PM  
AVERAGE 59  
   
......................................................  
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 70 89 1956  
1991  
2022  
MINIMUM TEMPERATURE (F) 50 34 1888  
1996  
 
SUNRISE AND SUNSET  
MAY 12 2024...........SUNRISE 5:34 AM CDT SUNSET 8:03 PM CDT  
MAY 13 2024...........SUNRISE 5:33 AM CDT SUNSET 8:04 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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