622  
CDUS44 KMRX 200835  
CLITRI  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE MORRISTOWN, TN  
335 AM EST SAT DEC 20 2025  
   
...............................
 
 
   
..THE TRI-CITIES AIRPORT CLIMATE SUMMARY FOR DECEMBER 19 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 63 12:46 AM 68 1939 49 14 44  
MINIMUM 27 8:53 PM 4 1963 29 -2 37  
AVERAGE 45 39 6 41  
 
PRECIPITATION (IN)  
YESTERDAY 0.35 0.79 1967 0.11 0.24 0.00  
MONTH TO DATE 1.84 2.41 -0.57 1.82  
SINCE DEC 1 1.84 2.41 -0.57 1.82  
SINCE JAN 1 44.28 42.62 1.66 41.79  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0 0.0 0.0  
MONTH TO DATE 0.9 0.9 -0.0 1.1  
SINCE DEC 1 0.9 0.9 -0.0 1.1  
SINCE JUL 1 1.4 1.2 0.2 1.5  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 20 26 -6 24  
MONTH TO DATE 553 468 85 470  
SINCE DEC 1 553 468 85 470  
SINCE JUL 1 1363 1321 42 1097  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 1154 1104 50 1348    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 31 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 43 HIGHEST GUST DIRECTION W (270)  
AVERAGE WIND SPEED 13.4  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 1:00 AM  
LOWEST 35 4:00 PM  
AVERAGE 64  
   
......................................................
 
 
THE TRI-CITIES AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 48 66 1978  
1987  
MINIMUM TEMPERATURE (F) 29 5 2004  
 
SUNRISE AND SUNSET  
DECEMBER 20 2025......SUNRISE 7:37 AM EST SUNSET 5:17 PM EST  
DECEMBER 21 2025......SUNRISE 7:38 AM EST SUNSET 5:18 PM EST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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