258  
CDUS46 KSGX 190923  
CLIFUL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN DIEGO, CA  
223 AM PDT FRI SEP 19 2025  
   
...............................  
 
   
..THE FULLERTON AIRPORT CA CLIMATE SUMMARY FOR SEPTEMBER 18 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 84 2:10 PM 97 2020 85 -1 76  
MINIMUM 70 4:04 AM 55 2010 65 5 59  
AVERAGE 77 75 2 68  
 
PRECIPITATION (IN)  
YESTERDAY 0.04R 0.00 MM 0.01 0.03 0.00  
MONTH TO DATE 0.04 0.07 -0.03 T  
SINCE JUL 1 0.04 0.11 -0.07 T  
SINCE OCT 1 4.52 11.79 -7.27 16.56  
SINCE JAN 1 4.49 8.69 -4.20 14.69  
 
DEGREE DAYS  
HEATING  
YESTERDAY 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  
YESTERDAY 12 10 2 3  
MONTH TO DATE 224 198 26 242  
SINCE SEP 1 224 198 26 242  
SINCE JAN 1 1181 1221 -40 1176    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION S (160)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION S (180)  
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 4.8  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87 4:00 AM  
LOWEST 55 2:00 PM  
AVERAGE 71  
   
......................................................  
 
THE FULLERTON AIRPORT CA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 85 96 2016  
MINIMUM TEMPERATURE (F) 64 57 2006  
 
SUNRISE AND SUNSET  
SEPTEMBER 19 2025.....SUNRISE 6:38 AM PDT SUNSET 6:52 PM PDT  
SEPTEMBER 20 2025.....SUNRISE 6:39 AM PDT SUNSET 6:51 PM PDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.
The Nexlab CA Page
Main Text Page