052  
CDUS42 KKEY 120536  
CLIMTH  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE KEY WEST FL  
136 AM EDT SAT SEP 12 2026  
   
...............................  
 
   
..THE MARATHON CLIMATE SUMMARY FOR SEPTEMBER 11 2026  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1950 TO 2026  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 89 213 PM 96 2022 90 -1 91  
2023  
MINIMUM 84 1148 AM 69 1956 79 5 78  
AVERAGE 87 84 3 85  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.66 1963 0.20 -0.20 0.43  
MONTH TO DATE 0.55 2.23 -1.68 4.07  
SINCE SEP 1 0.55 2.23 -1.68 4.07  
SINCE JAN 1 16.42 25.69 -9.27 20.67  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE SEP 1 0 0 0 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY 22 19 3 20  
MONTH TO DATE 234 219 15 205  
SINCE SEP 1 234 219 15 205  
SINCE JAN 1 3707 3689 18 3753    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION E (110)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION E (100)  
AVERAGE WIND SPEED 6.8  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 82  
LOWEST 68  
AVERAGE 75  
   
......................................................  
 
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 2026.....SUNRISE 709 AM EDT SUNSET 731 PM EDT  
SEPTEMBER 13 2026.....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.  
 
 
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