410  
CDUS42 KKEY 092116  
CLIMTH  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE KEY WEST FL  
416 PM EST SAT DEC 09 2023  
   
...............................  
 
   
..THE MARATHON CLIMATE SUMMARY FOR DECEMBER 9 2023  
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1950 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 84 1246 PM 86 1972 79 5 82  
MINIMUM 73 1242 AM 53 2010 69 4 73  
AVERAGE 79 74 5 78  
 
PRECIPITATION (IN)  
TODAY 0.00 0.86 2017 0.08 -0.08 0.00  
MONTH TO DATE 0.01 0.69 -0.68 0.05  
SINCE DEC 1 0.01 0.69 -0.68 0.05  
SINCE JAN 1 43.99 38.21 5.78 31.54  
 
DEGREE DAYS  
HEATING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JUL 1 0 1 -1 0  
 
COOLING  
TODAY 14 9 5 13  
MONTH TO DATE 103 84 19 125  
SINCE DEC 1 103 84 19 125  
SINCE JAN 1 5973 4955 1018 5607    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION E (100)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION E (100)  
AVERAGE WIND SPEED 7.7  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87  
LOWEST 67  
AVERAGE 77  
   
......................................................  
 
THE MARATHON CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 79 86 1971  
2004  
2019  
MINIMUM TEMPERATURE (F) 69 52 2014  
 
SUNRISE AND SUNSET  
DECEMBER 9 2023......SUNRISE 657 AM EST SUNSET 536 PM EST  
DECEMBER 10 2023......SUNRISE 658 AM EST SUNSET 536 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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