173  
CDUS46 KSGX 300044  
CLIONT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN DIEGO, CA  
544 PM PDT FRI AUG 29 2025  
   
...............................
 
 
   
..THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR AUGUST 29 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 96 3:24 PM 108 2009 95 1 89  
2017  
MINIMUM 70 5:46 AM 59 2010 65 5 60  
AVERAGE 83 80 3 75  
 
PRECIPITATION (IN)  
TODAY 0.00 0.01 2000 0.00 0.00 0.00  
MONTH TO DATE T 0.03 -0.03 T  
SINCE JUL 1 T 0.08 -0.08 T  
SINCE OCT 1 6.22 11.54 -5.32 17.64  
SINCE JAN 1 6.07 8.44 -2.37 16.29  
 
DEGREE DAYS  
HEATING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 0 4 -4 2  
SINCE JUL 1 0 0 0 0  
 
COOLING  
TODAY 18 15 3 10  
MONTH TO DATE 466 435 31 484  
SINCE JUN 1 1099 1127 -28 1289  
SINCE JAN 1 1349 1341 8 1350    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION SW (230)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION W (260)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION W (270)  
AVERAGE WIND SPEED 4.9  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 53 6:00 AM  
LOWEST 19 2:00 PM  
AVERAGE 36  
   
......................................................
 
 
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 95 109 1998  
MINIMUM TEMPERATURE (F) 65 57 2010  
 
SUNRISE AND SUNSET  
AUGUST 29 2025........SUNRISE 6:22 AM PDT SUNSET 7:20 PM PDT  
AUGUST 30 2025........SUNRISE 6:23 AM PDT SUNSET 7:18 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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