905  
CDUS44 KMRX 182119  
CLITRI  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE MORRISTOWN, TN  
519 PM EDT MON AUG 18 2025  
   
...............................
 
 
   
..THE TRI-CITIES AIRPORT CLIMATE SUMMARY FOR AUGUST 18 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 89 2:29 PM 101 1988 86 3 83  
MINIMUM 66 6:12 AM 53 1943 63 3 65  
AVERAGE 78 75 3 74  
 
PRECIPITATION (IN)  
TODAY 0.00 2.04 2015 0.12 -0.12 0.65  
MONTH TO DATE 3.76 2.40 1.36 4.58  
SINCE JUN 1 16.24 11.32 4.92 10.56  
SINCE JAN 1 33.13 30.35 2.78 29.76  
 
SNOWFALL (IN)  
TODAY 0.0 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE JUN 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 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 2 7 -5 1  
SINCE JUL 1 0 0 0 0  
 
COOLING  
TODAY 13 10 3 9  
MONTH TO DATE 168 180 -12 203  
SINCE JUN 1 856 732 124 890  
SINCE JAN 1 971 827 144 1016    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION N (20)  
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION NE (40)  
AVERAGE WIND SPEED 1.6  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 12:00 AM  
LOWEST 50 4:00 PM  
AVERAGE 75  
   
......................................................
 
 
THE TRI-CITIES AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 86 96 2007  
MINIMUM TEMPERATURE (F) 63 52 1943  
 
SUNRISE AND SUNSET  
AUGUST 18 2025........SUNRISE 6:50 AM EDT SUNSET 8:16 PM EDT  
AUGUST 19 2025........SUNRISE 6:51 AM EDT SUNSET 8:15 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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