428  
CDUS46 KSGX 020029  
CLIONT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN DIEGO, CA  
529 PM PDT FRI AUG 01 2025  
   
...............................
 
 
   
..THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR AUGUST 1 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 92 2:53 PM 104 2017 95 -3 98  
MINIMUM 61 5:42 AM 58 2010 65 -4 67  
AVERAGE 77 80 -3 83  
 
PRECIPITATION (IN)  
TODAY 0.00 T 2022 0.00 0.00 T  
2023  
2024  
MONTH TO DATE 0.00 0.00 0.00 T  
SINCE JUL 1 0.00 0.05 -0.05 T  
SINCE OCT 1 6.22 11.51 -5.29 17.64  
SINCE JAN 1 6.07 8.41 -2.34 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 12 15 -3 18  
MONTH TO DATE 12 15 -3 18  
SINCE JUN 1 645 707 -62 823  
SINCE JAN 1 895 921 -26 884    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION SW (240)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION W (250)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION W (250)  
AVERAGE WIND SPEED 5.8  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 4:00 AM  
LOWEST 24 2:00 PM  
AVERAGE 57  
   
......................................................
 
 
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 95 104 2021  
MINIMUM TEMPERATURE (F) 65 58 2013  
 
SUNRISE AND SUNSET  
AUGUST 1 2025........SUNRISE 6:02 AM PDT SUNSET 7:51 PM PDT  
AUGUST 2 2025........SUNRISE 6:03 AM PDT SUNSET 7:50 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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