123  
CDUS43 KLOT 170647  
CLILOT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
147 AM CDT SAT MAY 17 2025  
   
...............................
 
 
   
..THE ROMEOVILLE WFO CLIMATE SUMMARY FOR MAY 16 2025
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1992 TO 2025  
 
WEATHER ITEM OBSERVED RECORD YEAR NORMAL DEPARTURE LAST  
VALUE VALUE VALUE FROM YEAR  
NORMAL    
........................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 88 90 2001 73 15 73  
MINIMUM 57 32 1997 50 7 50  
AVERAGE 73 61 12 62  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.04 2019 0.15 MM 0.02  
MONTH TO DATE 0.50 2.50 -2.00 3.93  
SINCE MAR 1 8.34 9.32 -0.98 15.57  
SINCE JAN 1 9.76 13.49 -3.73 19.42  
 
SNOWFALL (IN)  
YESTERDAY 0.0 MM MM 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE MAR 1 2.7 5.1 -2.4 0.6  
SINCE JUL 1 17.5 33.2 -15.7 18.7  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 6 -6 3  
MONTH TO DATE 97 122 -25 50  
SINCE MAR 1 1160 1376 -216 1068  
SINCE JUL 1 5498 5982 -484 5028  
 
COOLING  
YESTERDAY 8 2 6 0  
MONTH TO DATE 38 22 16 8  
SINCE MAR 1 44 32 12 24  
SINCE JAN 1 44 32 12 24    
........................................................
 
 
THE ROMEOVILLE WFO CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 73 89 1996  
MINIMUM TEMPERATURE (F) 51 35 2002  
 
SUNRISE AND SUNSET  
MAY 17 2025...........SUNRISE 5:31 AM CDT SUNSET 8:07 PM CDT  
MAY 18 2025...........SUNRISE 5:30 AM CDT SUNSET 8:08 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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