531  
CDUS42 KKEY 292116  
CLIMTH  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE KEY WEST FL  
416 PM EST MON JAN 29 2024  
   
...............................
 
 
   
..THE MARATHON CLIMATE SUMMARY FOR JANUARY 29 2024
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM MM MM 85 1972 76 MM 82  
1991  
MINIMUM MM MM 45 1986 65 MM 74  
AVERAGE MM 70 MM 78  
 
PRECIPITATION (IN)  
TODAY 0.00 1.34 2014 0.07 -0.07 0.32  
MONTH TO DATE 1.05 1.50 -0.45 0.45  
SINCE DEC 1 9.63 3.70 5.93 3.69  
SINCE JAN 1 1.05 1.50 -0.45 0.45  
 
DEGREE DAYS  
HEATING  
TODAY MM 1 MM 0  
MONTH TO DATE 0 29 -29 16  
SINCE DEC 1 3 46 -43 44  
SINCE JUL 1 3 47 -44 44  
 
COOLING  
TODAY MM 6 MM 13  
MONTH TO DATE 145 177 -32 271  
SINCE DEC 1 359 433 -74 587  
SINCE JAN 1 145 177 -32 271    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 15.1  
 
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 MM  
LOWEST MM  
AVERAGE MM  
   
......................................................
 
 
THE MARATHON CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 77 85 1991  
MINIMUM TEMPERATURE (F) 65 46 2022  
 
SUNRISE AND SUNSET  
JANUARY 29 2024.......SUNRISE 708 AM EST SUNSET 607 PM EST  
JANUARY 30 2024.......SUNRISE 707 AM EST SUNSET 608 PM EST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
TEMPERATURE DATA AT THE FLORIDA KEYS MARATHON INTERNATIONAL AIRPORT  
REMAINS UNAVAILABLE DUE TO A SENSOR FAILURE. DATA WILL BE  
BACKFILLED FROM THE OFFICIAL BACKUP SOURCE AT THE NWS COOP SITE  
LOCATED AT CURRY HAMMOCK STATE PARK, FOLLOWING A FUTURE SITE VISIT.  
WHILE THE CLIMTH PRODUCTS WILL NOT BE UPDATED RETROACTIVELY, THIS  
DATA WILL BE AVAILABLE IN THE CF6MTH AND CLMMTH PRODUCTS, ON OR  
AFTER FEBRUARY 1ST.  
 
ROSS  
 
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