407  
CDUS42 KKEY 120533  
CLIMTH  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE KEY WEST FL  
133 AM EDT FRI SEP 12 2025  
   
...............................  
 
   
..THE MARATHON CLIMATE SUMMARY FOR SEPTEMBER 11 2025  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1950 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM MM MM 96 2022 90 MM 90  
2023  
MINIMUM MM MM 69 1956 79 MM 84  
AVERAGE MM 84 MM 87  
 
PRECIPITATION (IN)  
YESTERDAY 0.43 1.66 1963 0.20 0.23 0.01  
MONTH TO DATE 4.07 2.23 1.84 0.57  
SINCE SEP 1 4.07 2.23 1.84 0.57  
SINCE JAN 1 20.67 25.69 -5.02 35.70  
 
DEGREE DAYS  
HEATING  
YESTERDAY MM 0 MM 0  
MONTH TO DATE 0 0 0 0  
SINCE SEP 1 0 0 0 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY MM 19 MM 22  
MONTH TO DATE 108 219 -111 241  
SINCE SEP 1 108 219 -111 241  
SINCE JAN 1 3656 3689 -33 3909    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION E (100)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION E (100)  
AVERAGE WIND SPEED 3.6  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
HEAVY RAIN  
RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST MM  
LOWEST MM  
AVERAGE MM  
   
......................................................  
 
THE MARATHON CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 90 96 2022  
MINIMUM TEMPERATURE (F) 79 71 1953  
1956  
 
SUNRISE AND SUNSET  
SEPTEMBER 12 2025.....SUNRISE 709 AM EDT SUNSET 731 PM EDT  
SEPTEMBER 13 2025.....SUNRISE 710 AM EDT SUNSET 730 PM EDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
 
BT  
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