254   
CDUS44 KMRX 280839  
CLITRI  
  
CLIMATE REPORT   
NATIONAL WEATHER SERVICE MORRISTOWN, TN  
439 AM EDT SUN SEP 28 2025  
   
...............................  
  
   
..THE TRI-CITIES AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 27 2025  
  
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1937 TO 2025  
  
WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST        
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR       
                                                  NORMAL              
...............................................................  
  
TEMPERATURE (F)                                                            
 YESTERDAY                                                             
  MAXIMUM         76  12:02 PM  90    2017  77     -1       82          
                                      2019                             
  MINIMUM         62  11:59 PM  37    1940  52     10       67          
                                      2001                             
  AVERAGE         69                        65      4       75       
  
PRECIPITATION (IN)                                                      
  YESTERDAY        0.11          1.08 2018   0.10   0.01     0.70       
  MONTH TO DATE    4.15                      2.55   1.60     7.65       
  SINCE SEP 1      4.15                      2.55   1.60     7.65       
  SINCE JAN 1     38.77                     34.26   4.51    38.07       
  
SNOWFALL (IN)                                                                
  YESTERDAY        0.0                       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                         3     -3        0          
  MONTH TO DATE   17                        24     -7        8          
  SINCE SEP 1     17                        24     -7        8          
  SINCE JUL 1     24                        25     -1        9          
  
 COOLING                                                                
  YESTERDAY        4                         2      2       10          
  MONTH TO DATE   82                       137    -55      160          
  SINCE SEP 1     82                       137    -55      160          
  SINCE JAN 1   1129                      1079     50     1288           
...............................................................  
  
WIND (MPH)                                                              
  HIGHEST WIND SPEED    12   HIGHEST WIND DIRECTION    NW (300)         
  HIGHEST GUST SPEED    15   HIGHEST GUST DIRECTION     W (280)         
  AVERAGE WIND SPEED     1.3                                          
  
SKY COVER                                                               
  POSSIBLE SUNSHINE  MM                                                   
  AVERAGE SKY COVER 0.8                                                   
  
WEATHER CONDITIONS                                                      
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                           
  THUNDERSTORM                                                          
  LIGHT RAIN                                                            
  FOG                                                                   
  FOG W/VISIBILITY <= 1/4 MILE                                          
  
RELATIVE HUMIDITY (PERCENT)  
 HIGHEST   100           5:00 AM                                        
 LOWEST     69          12:00 PM                                        
 AVERAGE    85                                                          
   
......................................................  
  
THE TRI-CITIES AIRPORT CLIMATE NORMALS FOR TODAY  
                         NORMAL    RECORD    YEAR                       
 MAXIMUM TEMPERATURE (F)   77        91      2019                        
 MINIMUM TEMPERATURE (F)   52        34      1940                        
  
SUNRISE AND SUNSET                                                      
SEPTEMBER 28 2025.....SUNRISE   7:23 AM EDT   SUNSET   7:17 PM EDT       
SEPTEMBER 29 2025.....SUNRISE   7:23 AM EDT   SUNSET   7:16 PM EDT       
  
-  INDICATES NEGATIVE NUMBERS.  
R  INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T  INDICATES TRACE AMOUNT.  
  
  
 
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