868  
CDUS42 KKEY 160541  
CLIMTH  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE KEY WEST FL  
1241 AM EST SAT DEC 16 2023  
   
...............................
 
 
   
..THE MARATHON CLIMATE SUMMARY FOR DECEMBER 15 2023
 
 
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)  
YESTERDAY  
MAXIMUM MM MM 87 1972 78 MM 84  
MINIMUM 69 1022 PM 45 2010 68 1 72  
AVERAGE MM 73 MM 78  
 
PRECIPITATION (IN)  
YESTERDAY 0.82 1.21 2006 0.08 0.74 0.37  
MONTH TO DATE 1.47 1.17 0.30 0.42  
SINCE DEC 1 1.47 1.17 0.30 0.42  
SINCE JAN 1 45.45 38.69 6.76 31.91  
 
DEGREE DAYS  
HEATING  
YESTERDAY MM 1 MM 0  
MONTH TO DATE 0 3 -3 0  
SINCE DEC 1 0 3 -3 0  
SINCE JUL 1 0 4 -4 0  
 
COOLING  
YESTERDAY MM 8 MM 13  
MONTH TO DATE 135 137 -2 194  
SINCE DEC 1 135 137 -2 194  
SINCE JAN 1 6005 5008 997 5676    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION NE (50)  
HIGHEST GUST SPEED 39 HIGHEST GUST DIRECTION NE (60)  
AVERAGE WIND SPEED 20.0  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100  
LOWEST 87  
AVERAGE 94  
   
......................................................
 
 
THE MARATHON CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 78 84 2009  
2019  
2021  
MINIMUM TEMPERATURE (F) 68 45 1968  
 
SUNRISE AND SUNSET  
DECEMBER 16 2023......SUNRISE 701 AM EST SUNSET 538 PM EST  
DECEMBER 17 2023......SUNRISE 702 AM EST SUNSET 539 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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