673  
CDUS43 KLOT 212154  
CLILOT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
454 PM CDT THU MAY 21 2026  
   
...............................  
 
   
..THE ROMEOVILLE WFO CLIMATE SUMMARY FOR MAY 21 2026  
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1992 TO 2026  
 
WEATHER ITEM OBSERVED RECORD YEAR NORMAL DEPARTURE LAST  
VALUE VALUE VALUE FROM YEAR  
NORMAL    
........................................................  
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 63 89 2024 74 -11 55  
MINIMUM 47 32 2002 52 -5 48  
AVERAGE 55 63 -8 52  
 
PRECIPITATION (IN)  
TODAY 0.00 1.08 2018 0.15 -0.15 0.05  
MONTH TO DATE 0.94 3.28 -2.34 1.33  
SINCE MAR 1 11.66 10.10 1.56 9.17  
SINCE JAN 1 14.29 14.27 0.02 10.59  
 
SNOWFALL (IN)  
TODAY 0.0 MM MM 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE MAR 1 6.0 5.1 0.9 2.7  
SINCE JUL 1 30.7 33.2 -2.5 17.5  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 10 4 6 13  
MONTH TO DATE 203 146 57 149  
SINCE MAR 1 1177 1400 -223 1212  
SINCE JUL 1 5758 6006 -248 5550  
 
COOLING  
TODAY 0 3 -3 0  
MONTH TO DATE 20 33 -13 38  
SINCE MAR 1 33 43 -10 44  
SINCE JAN 1 33 43 -10 44    
........................................................  
 
THE ROMEOVILLE WFO CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 75 88 2007  
MINIMUM TEMPERATURE (F) 52 32 1997  
 
SUNRISE AND SUNSET  
MAY 21 2026...........SUNRISE 5:28 AM CDT SUNSET 8:11 PM CDT  
MAY 22 2026...........SUNRISE 5:27 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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