000  
CDUS43 KLOT 200635  
CLIRFD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
135 AM CDT WED SEP 20 2017  
 
   
...............................
 
 
   
..THE ROCKFORD IL CLIMATE SUMMARY FOR SEPTEMBER 19 2017
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1905 TO 2017  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 80 427 PM 93 1948 74 6 88  
1947  
1925  
MINIMUM 60 144 AM 34 1929 51 9 57  
AVERAGE 70 63 7 73  
 
PRECIPITATION (IN)  
YESTERDAY 0.39 2.38 1968 0.11 0.28 0.33  
MONTH TO DATE 0.46 2.17 -1.71 1.86  
SINCE SEP 1 0.46 2.17 -1.71 1.86  
SINCE JAN 1 37.25 27.83 9.42 27.78  
 
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 5 -5 0  
MONTH TO DATE 50 45 5 2  
SINCE SEP 1 50 45 5 2  
SINCE JUL 1 57 59 -2 2  
 
COOLING  
YESTERDAY 5 2 3 8  
MONTH TO DATE 33 69 -36 114  
SINCE SEP 1 33 69 -36 114  
SINCE JAN 1 717 796 -79 1031    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SE (120)  
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION SE (120)  
AVERAGE WIND SPEED 6.9  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 300 AM  
LOWEST 54 200 PM  
AVERAGE 77  
   
......................................................
 
 
 
THE ROCKFORD IL CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 74 92 1920  
1895  
MINIMUM TEMPERATURE (F) 50 30 1956  
 
 
SUNRISE AND SUNSET  
SEPTEMBER 20 2017.....SUNRISE 642 AM CDT SUNSET 657 PM CDT  
SEPTEMBER 21 2017.....SUNRISE 643 AM CDT SUNSET 655 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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