409  
CDUS46 KSGX 180926  
CLIMYF  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN DIEGO, CA  
226 AM PDT THU SEP 18 2025  
   
...............................
 
 
...THE SAN DIEGO/MONTGOMERY FLD CA CLIMATE SUMMARY FOR SEPTEMBER 17 2025...  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1998 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 86 10:44 AM 100 2020 81 5 72  
MINIMUM 69 11:59 PM 55 2024 64 5 55  
AVERAGE 78 72 6 64  
 
PRECIPITATION (IN)  
YESTERDAY 0.05R T 2023 0.01 0.04 0.00  
MONTH TO DATE 0.05 0.08 -0.03 0.00  
SINCE JUL 1 0.12 0.16 -0.04 0.01  
SINCE OCT 1 5.41 10.93 -5.52 12.61  
SINCE JAN 1 5.29 7.87 -2.58 11.46  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 1  
MONTH TO DATE 0 0 0 1  
SINCE SEP 1 0 0 0 1  
SINCE JUL 1 0 1 -1 1  
 
COOLING  
YESTERDAY 13 8 5 0  
MONTH TO DATE 156 143 13 182  
SINCE SEP 1 156 143 13 182  
SINCE JAN 1 736 789 -53 804    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION NW (310)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION N (340)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION N (340)  
AVERAGE WIND SPEED 6.5  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87 3:00 PM  
LOWEST 41 10:00 AM  
AVERAGE 64  
   
......................................................
 
 
THE SAN DIEGO/MONTGOMERY FLD CA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 81 101 2020  
MINIMUM TEMPERATURE (F) 64 57 2010  
 
SUNRISE AND SUNSET  
SEPTEMBER 18 2025.....SUNRISE 6:34 AM PDT SUNSET 6:50 PM PDT  
SEPTEMBER 19 2025.....SUNRISE 6:35 AM PDT SUNSET 6:49 PM PDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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