119  
CDUS46 KSGX 270938  
CLIONT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN DIEGO, CA  
238 AM PDT SAT SEP 27 2025  
   
...............................  
 
...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR SEPTEMBER 26 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 75 12:19 PM 107 2010 88 -13 86  
MINIMUM 64 12:54 AM 54 2005 62 2 58  
AVERAGE 70 75 -5 72  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 T 2019 0.00 0.00 0.00  
2021  
MONTH TO DATE 0.09 0.08 0.01 T  
SINCE JUL 1 0.09 0.16 -0.07 T  
SINCE OCT 1 6.31 11.62 -5.31 17.64  
SINCE JAN 1 6.16 8.52 -2.36 16.29  
 
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 5 10 -5 7  
MONTH TO DATE 371 339 32 346  
SINCE SEP 1 371 339 32 346  
SINCE JAN 1 1760 1712 48 1720    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION W (250)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION W (250)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION SW (220)  
AVERAGE WIND SPEED 6.3  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87 1:00 AM  
LOWEST 57 12:00 PM  
AVERAGE 72  
   
......................................................  
 
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 112 2010  
MINIMUM TEMPERATURE (F) 62 51 2013  
 
SUNRISE AND SUNSET  
SEPTEMBER 27 2025.....SUNRISE 6:42 AM PDT SUNSET 6:40 PM PDT  
SEPTEMBER 28 2025.....SUNRISE 6:43 AM PDT SUNSET 6:38 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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