504  
CDUS42 KKEY 210535  
CLIMTH  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE KEY WEST FL  
135 AM EDT TUE MAY 21 2024  
   
...............................  
 
   
..THE MARATHON CLIMATE SUMMARY FOR MAY 20 2024  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1950 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 86 555 PM 92 2008 88 -2 92  
2023  
MINIMUM 72 1034 AM 68 1956 76 -4 75  
AVERAGE 79 82 -3 84  
 
PRECIPITATION (IN)  
YESTERDAY 7.08R 1.68 1991 0.12 6.96 0.75  
MONTH TO DATE 7.08 1.95 5.13 1.14  
SINCE MAR 1 11.61 5.39 6.22 5.07  
SINCE JAN 1 15.58 8.73 6.85 6.55  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE MAR 1 0 5 -5 0  
SINCE JUL 1 8 71 -63 44  
 
COOLING  
YESTERDAY 14 17 -3 19  
MONTH TO DATE 373 321 52 357  
SINCE MAR 1 1138 1022 116 1326  
SINCE JAN 1 1543 1428 115 1996    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION E (80)  
HIGHEST GUST SPEED 36 HIGHEST GUST DIRECTION W (250)  
AVERAGE WIND SPEED 5.5  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97  
LOWEST 67  
AVERAGE 82  
   
......................................................  
 
THE MARATHON CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 92 2008  
2019  
2023  
MINIMUM TEMPERATURE (F) 76 69 1954  
1994  
 
SUNRISE AND SUNSET  
MAY 21 2024...........SUNRISE 638 AM EDT SUNSET 804 PM EDT  
MAY 22 2024...........SUNRISE 637 AM EDT SUNSET 805 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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