616  
CDUS42 KJAX 282134  
CLISSI  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE JACKSONVILLE FL  
534 PM EDT THU SEP 28 2023  
   
...............................
 
 
   
..THE ST SIMONS ISLAND CLIMATE SUMMARY FOR SEPTEMBER 28 2023
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1940 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 79 2:54 PM 94 2018 84 -5 74  
MINIMUM 69 7:40 AM 54 1962 70 -1 67  
AVERAGE 74 77 -3 71  
 
PRECIPITATION (IN)  
TODAY 0.00 3.35 1984 0.19 -0.19 T  
MONTH TO DATE 9.37 5.63 3.74 7.47  
SINCE SEP 1 9.37 5.63 3.74 7.47  
SINCE JAN 1 41.49 35.68 5.81 43.56  
 
SNOWFALL (IN)  
TODAY MM 0.0 MM  
 
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 9 12 -3 6  
MONTH TO DATE 441 402 39 422  
SINCE SEP 1 441 402 39 422  
SINCE JAN 1 3185 2536 649 2839    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION NE (30)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION N (20)  
AVERAGE WIND SPEED 13.2  
 
SKY COVER  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87 8:00 AM  
LOWEST 69 2:00 PM  
AVERAGE 78  
   
......................................................
 
 
THE ST SIMONS ISLAND CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 83 92 1974  
MINIMUM TEMPERATURE (F) 70 53 1962  
 
SUNRISE AND SUNSET  
SEPTEMBER 28 2023.....SUNRISE 7:17 AM EDT SUNSET 7:15 PM EDT  
SEPTEMBER 29 2023.....SUNRISE 7:18 AM EDT SUNSET 7:13 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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