833  
CDUS43 KLOT 112134  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
434 PM CDT SUN MAY 11 2025  
   
...............................
 
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR MAY 11 2025
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1871 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 71 2:29 PM 90 2022 69 2 70  
MINIMUM 42 2:38 AM 33 1981 49 -7 51  
AVERAGE 57 59 -2 61  
 
PRECIPITATION (IN)  
TODAY 0.00 3.30 1966 0.15 -0.15 T  
MONTH TO DATE 0.33 1.62 -1.29 2.42  
SINCE MAR 1 5.98 7.82 -1.84 9.48  
SINCE JAN 1 8.48 11.78 -3.30 13.63  
 
SNOWFALL (IN)  
TODAY 0.0 0.2 1966 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE MAR 1 2.8 6.8 -4.0 1.0  
SINCE JUL 1 17.6 38.4 -20.8 22.2  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 8 7 1 4  
MONTH TO DATE 105 96 9 40  
SINCE MAR 1 1163 1372 -209 1053  
SINCE JUL 1 5298 5841 -543 4741  
 
COOLING  
TODAY 0 1 -1 0  
MONTH TO DATE 0 11 -11 8  
SINCE MAR 1 8 21 -13 17  
SINCE JAN 1 8 21 -13 17    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NE (50)  
AVERAGE WIND SPEED 8.8  
 
SKY COVER  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 76 5:00 AM  
LOWEST 35 1:00 PM  
AVERAGE 56  
   
......................................................
 
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 69 92 1956  
MINIMUM TEMPERATURE (F) 49 31 1981  
 
SUNRISE AND SUNSET  
MAY 11 2025...........SUNRISE 5:35 AM CDT SUNSET 8:02 PM CDT  
MAY 12 2025...........SUNRISE 5:34 AM CDT SUNSET 8:03 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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