468   
CDUS44 KMRX 300813  
CLITRI  
  
CLIMATE REPORT   
NATIONAL WEATHER SERVICE MORRISTOWN, TN  
413 AM EDT TUE SEP 30 2025  
   
...............................  
  
   
..THE TRI-CITIES AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 29 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         80   2:11 PM  93    2019  76      4       75          
  MINIMUM         57   7:16 AM  33    1942  51      6       64          
  AVERAGE         69                        64      5       70       
  
PRECIPITATION (IN)                                                      
  YESTERDAY        T             3.21 1944   0.10  -0.10     0.01       
  MONTH TO DATE    4.15                      2.74   1.41     7.66       
  SINCE SEP 1      4.15                      2.74   1.41     7.66       
  SINCE JAN 1     38.77                     34.45   4.32    38.08       
  
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                        30    -13        8          
  SINCE SEP 1     17                        30    -13        8          
  SINCE JUL 1     24                        31     -7        9          
  
 COOLING                                                                
  YESTERDAY        4                         2      2        5          
  MONTH TO DATE   92                       141    -49      174          
  SINCE SEP 1     92                       141    -49      174          
  SINCE JAN 1   1139                      1083     56     1302           
...............................................................  
  
WIND (MPH)                                                              
  HIGHEST WIND SPEED    12   HIGHEST WIND DIRECTION     E (70)          
  HIGHEST GUST SPEED    22   HIGHEST GUST DIRECTION    NE (40)          
  AVERAGE WIND SPEED     2.4                                          
  
SKY COVER                                                               
  POSSIBLE SUNSHINE  MM                                                   
  AVERAGE SKY COVER 0.5                                                   
  
WEATHER CONDITIONS                                                      
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                           
  LIGHT RAIN                                                            
  FOG                                                                   
  
RELATIVE HUMIDITY (PERCENT)  
 HIGHEST   100           1:00 AM                                        
 LOWEST     54           1:00 PM                                        
 AVERAGE    77                                                          
   
......................................................  
  
THE TRI-CITIES AIRPORT CLIMATE NORMALS FOR TODAY  
                         NORMAL    RECORD    YEAR                       
 MAXIMUM TEMPERATURE (F)   76        90      1941                        
 MINIMUM TEMPERATURE (F)   51        34      1967                        
  
SUNRISE AND SUNSET                                                      
SEPTEMBER 30 2025.....SUNRISE   7:24 AM EDT   SUNSET   7:14 PM EDT       
OCTOBER  1 2025.......SUNRISE   7:25 AM EDT   SUNSET   7:13 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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