674  
CDUS42 KKEY 102017  
CLIMTH  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE KEY WEST FL  
417 PM EDT SUN SEP 10 2023  
   
...............................
 
 
   
..THE MARATHON CLIMATE SUMMARY FOR SEPTEMBER 10 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 94 214 PM 95 1993 90 4 94  
MINIMUM 81 547 AM 67 1953 79 2 85  
AVERAGE 88 85 3 90  
 
PRECIPITATION (IN)  
TODAY 0.00 2.63 1956 0.20 -0.20 0.00  
MONTH TO DATE 0.88 2.03 -1.15 0.54  
SINCE SEP 1 0.88 2.03 -1.15 0.54  
SINCE JAN 1 24.44 25.49 -1.05 21.39  
 
DEGREE DAYS  
HEATING  
TODAY 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  
TODAY 23 20 3 25  
MONTH TO DATE 215 200 15 235  
SINCE SEP 1 215 200 15 235  
SINCE JAN 1 4524 3670 854 4109    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 7 HIGHEST WIND DIRECTION S (170)  
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION S (170)  
AVERAGE WIND SPEED 3.0  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 82  
LOWEST 60  
AVERAGE 71  
   
......................................................
 
 
THE MARATHON CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 90 96 2022  
MINIMUM TEMPERATURE (F) 79 69 1956  
 
SUNRISE AND SUNSET  
SEPTEMBER 10 2023.....SUNRISE 709 AM EDT SUNSET 734 PM EDT  
SEPTEMBER 11 2023.....SUNRISE 709 AM EDT SUNSET 733 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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