731  
CDUS46 KSGX 020930  
CLIONT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN DIEGO, CA  
230 AM PDT THU OCT 02 2025  
   
...............................  
 
   
..THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR OCTOBER 1 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 83 2:15 PM 107 2012 86 -3 102  
MINIMUM 59 5:14 AM 52 2019 61 -2 64  
AVERAGE 71 74 -3 83  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.00 MM 0.01 -0.01 0.00  
MONTH TO DATE 0.00 0.01 -0.01 0.00  
SINCE JUL 1 0.12 0.19 -0.07 T  
SINCE OCT 1 0.00 0.01 -0.01 0.00  
SINCE JAN 1 6.19 8.55 -2.36 16.29  
 
DEGREE DAYS  
HEATING  
YESTERDAY 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  
YESTERDAY 6 9 -3 18  
MONTH TO DATE 6 9 -3 18  
SINCE SEP 1 406 387 19 404  
SINCE JAN 1 1795 1760 35 1778    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION SW (240)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION W (250)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION SW (240)  
AVERAGE WIND SPEED 4.7  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 86 6:00 AM  
LOWEST 35 1:00 PM  
AVERAGE 61  
   
......................................................  
 
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 86 105 2020  
MINIMUM TEMPERATURE (F) 61 52 2023  
 
SUNRISE AND SUNSET  
OCTOBER 2 2025.......SUNRISE 6:46 AM PDT SUNSET 6:33 PM PDT  
OCTOBER 3 2025.......SUNRISE 6:47 AM PDT SUNSET 6:31 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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