144  
CDUS44 KMRX 152128  
CLITRI  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE MORRISTOWN, TN  
528 PM EDT MON SEP 15 2025  
   
...............................
 
 
   
..THE TRI-CITIES AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 15 2025
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 83 3:54 PM 92 2016 81 2 84  
MINIMUM 55 6:24 AM 40 1985 57 -2 60  
AVERAGE 69 69 0 72  
 
PRECIPITATION (IN)  
TODAY 0.00 1.93 1981 0.10 -0.10 0.00  
MONTH TO DATE 2.22 1.41 0.81 0.13  
SINCE SEP 1 2.22 1.41 0.81 0.13  
SINCE JAN 1 36.84 33.12 3.72 30.55  
 
SNOWFALL (IN)  
TODAY 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  
TODAY 0 1 -1 0  
MONTH TO DATE 17 3 14 8  
SINCE SEP 1 17 3 14 8  
SINCE JUL 1 24 4 20 9  
 
COOLING  
TODAY 4 5 -1 7  
MONTH TO DATE 21 95 -74 74  
SINCE SEP 1 21 95 -74 74  
SINCE JAN 1 1068 1037 31 1202    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 7 HIGHEST WIND DIRECTION NW (330)  
HIGHEST GUST SPEED 11 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 0.8  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 12:00 AM  
LOWEST 41 3:00 PM  
AVERAGE 71  
   
......................................................
 
 
THE TRI-CITIES AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 81 92 1955  
2019  
MINIMUM TEMPERATURE (F) 57 42 1985  
2000  
2001  
 
SUNRISE AND SUNSET  
SEPTEMBER 15 2025.....SUNRISE 7:12 AM EDT SUNSET 7:36 PM EDT  
SEPTEMBER 16 2025.....SUNRISE 7:13 AM EDT SUNSET 7:35 PM EDT  
 
- 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 TN Page
The Nexlab VA Page
The Nexlab NC Page Main Text Page