512  
CDUS46 KSGX 100017  
CLIONT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN DIEGO, CA  
517 PM PDT THU OCT 09 2025  
   
...............................
 
 
   
..THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR OCTOBER 9 2025
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 89 10:30 AM 103 2015 84 5 92  
MINIMUM 58 2:22 AM 49 2013 59 -1 63  
AVERAGE 74 71 3 78  
 
PRECIPITATION (IN)  
TODAY T 0.09 2013 0.01 -0.01 0.00  
MONTH TO DATE T 0.07 -0.07 0.00  
SINCE JUL 1 0.12 0.25 -0.13 T  
SINCE OCT 1 T 0.07 -0.07 0.00  
SINCE JAN 1 6.19 8.61 -2.42 16.29  
 
DEGREE DAYS  
HEATING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE SEP 1 0 1 -1 0  
SINCE JUL 1 0 1 -1 0  
 
COOLING  
TODAY 9 7 2 13  
MONTH TO DATE 49 71 -22 150  
SINCE SEP 1 449 449 0 536  
SINCE JAN 1 1838 1822 16 1910    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION SW (230)  
HIGHEST WIND SPEED 7 HIGHEST WIND DIRECTION S (180)  
HIGHEST GUST SPEED 9 HIGHEST GUST DIRECTION W (260)  
AVERAGE WIND SPEED 1.4  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
THUNDERSTORM  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87 2:00 AM  
LOWEST 45 3:00 PM  
AVERAGE 66  
   
......................................................
 
 
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 84 100 2015  
MINIMUM TEMPERATURE (F) 59 48 2013  
 
SUNRISE AND SUNSET  
OCTOBER 9 2025.......SUNRISE 6:51 AM PDT SUNSET 6:23 PM PDT  
OCTOBER 10 2025.......SUNRISE 6:52 AM PDT SUNSET 6:22 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