028  
CDUS43 KLOT 180635  
CLIRFD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
135 AM CDT FRI SEP 18 2026  
   
...............................
 
 
   
..THE ROCKFORD IL CLIMATE SUMMARY FOR SEPTEMBER 17 2026
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1905 TO 2026  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 77 2:35 PM 93 1927 75 2 86  
1988  
MINIMUM 63 12:41 AM 35 1916 53 10 55  
AVERAGE 70 64 6 71  
 
PRECIPITATION (IN)  
YESTERDAY 0.80 2.21 1970 0.12 0.68 0.00  
MONTH TO DATE 1.88 2.17 -0.29 0.30  
SINCE SEP 1 1.88 2.17 -0.29 0.30  
SINCE JAN 1 24.11 28.96 -4.85 21.87  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0 MM 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE SEP 1 0.0 0.0 0.0 0.0  
SINCE JUL 1 0.0 0.0 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 4 -4 0  
MONTH TO DATE 14 34 -20 59  
SINCE SEP 1 14 34 -20 59  
SINCE JUL 1 14 45 -31 78  
 
COOLING  
YESTERDAY 5 3 2 6  
MONTH TO DATE 144 66 78 51  
SINCE SEP 1 144 66 78 51  
SINCE JAN 1 891 805 86 908    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION N (340)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION N (350)  
AVERAGE WIND SPEED 5.0  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 5:00 AM  
LOWEST 82 2:00 PM  
AVERAGE 91  
   
......................................................
 
 
THE ROCKFORD IL CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 75 92 1920  
MINIMUM TEMPERATURE (F) 53 32 1916  
1929  
 
SUNRISE AND SUNSET  
SEPTEMBER 18 2026.....SUNRISE 6:40 AM CDT SUNSET 7:01 PM CDT  
SEPTEMBER 19 2026.....SUNRISE 6:41 AM CDT SUNSET 6:59 PM CDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab IL Page
The Nexlab IN Page Main Text Page