299  
CDUS46 KSGX 180921  
CLISDM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN DIEGO, CA  
221 AM PDT MON AUG 18 2025  
   
...............................
 
 
   
..THE SAN DIEGO/BROWN CLIMATE SUMMARY FOR AUGUST 17 2025
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1997 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 79 12:06 PM 91 2016 81 -2 80  
MINIMUM 63 5:47 AM 59 2017 63 0 62  
2023  
AVERAGE 71 72 -1 71  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.00 2020 0.00 0.00 0.00  
MONTH TO DATE 0.00 0.00 0.00 T  
SINCE JUL 1 0.00 0.04 -0.04 T  
SINCE OCT 1 4.10 10.04 -5.94 12.99  
SINCE JAN 1 4.00 6.95 -2.95 10.99  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 6 23 -17 6  
SINCE JUL 1 0 1 -1 0  
 
COOLING  
YESTERDAY 6 7 -1 6  
MONTH TO DATE 101 111 -10 155  
SINCE JUN 1 329 319 10 463  
SINCE JAN 1 377 367 10 463    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION W (280)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION NW (310)  
AVERAGE WIND SPEED 4.2  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87 7:00 PM  
LOWEST 50 12:00 PM  
AVERAGE 69  
   
......................................................
 
 
THE SAN DIEGO/BROWN CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 81 91 2010  
2020  
MINIMUM TEMPERATURE (F) 63 58 1999  
 
SUNRISE AND SUNSET  
AUGUST 18 2025........SUNRISE 6:14 AM PDT SUNSET 7:29 PM PDT  
AUGUST 19 2025........SUNRISE 6:15 AM PDT SUNSET 7:28 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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