316  
CDUS43 KLOT 140631  
CLIRFD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
1231 AM CST THU DEC 14 2023  
   
...............................
 
 
   
..THE ROCKFORD IL CLIMATE SUMMARY FOR DECEMBER 13 2023
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1905 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 41 2:53 PM 62 2015 35 6 38  
MINIMUM 15 6:57 AM -14 1958 21 -6 33  
AVERAGE 28 28 0 36  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.41 2015 0.06 -0.06 0.16  
MONTH TO DATE 1.59 0.90 0.69 0.71  
SINCE DEC 1 1.59 0.90 0.69 0.71  
SINCE JAN 1 30.92 36.21 -5.29 37.62  
 
SNOWFALL (IN)  
YESTERDAY 0.0 6.6 1973 0.3 -0.3 0.0  
MONTH TO DATE 0.9 3.7 -2.8 T  
SINCE DEC 1 0.9 3.7 -2.8 T  
SINCE JUL 1 2.4 6.2 -3.8 2.3  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 37 37 0 29  
MONTH TO DATE 378 456 -78 401  
SINCE DEC 1 378 456 -78 401  
SINCE JUL 1 1595 1772 -177 1677  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 805 839 -34 978    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION SW (220)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 3.9  
 
SKY COVER  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 88 8:00 AM  
LOWEST 31 1:00 PM  
AVERAGE 60  
   
......................................................
 
 
THE ROCKFORD IL CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 35 61 2015  
MINIMUM TEMPERATURE (F) 21 -11 1919  
1985  
1989  
 
SUNRISE AND SUNSET  
DECEMBER 14 2023......SUNRISE 7:17 AM CST SUNSET 4:25 PM CST  
DECEMBER 15 2023......SUNRISE 7:18 AM CST SUNSET 4:25 PM CST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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