951  
CDUS46 KSGX 290921  
CLIONT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN DIEGO, CA  
221 AM PDT TUE JUL 29 2025  
   
...............................  
 
   
..THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR JULY 28 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 88 2:18 PM 102 1998 95 -7 91  
MINIMUM 59 5:06 AM 57 2012 65 -6 64  
AVERAGE 74 80 -6 78  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 T 2003 0.00 0.00 0.00  
MONTH TO DATE 0.00 0.04 -0.04 0.00  
SINCE JUL 1 0.00 0.04 -0.04 0.00  
SINCE OCT 1 6.22 11.50 -5.28 17.64  
SINCE JAN 1 6.07 8.40 -2.33 16.29  
 
DEGREE DAYS  
HEATING  
YESTERDAY 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  
YESTERDAY 9 15 -6 13  
MONTH TO DATE 306 397 -91 478  
SINCE JUN 1 594 647 -53 763  
SINCE JAN 1 844 861 -17 824    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION SW (240)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION W (250)  
AVERAGE WIND SPEED 7.2  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 4:00 AM  
LOWEST 30 3:00 PM  
AVERAGE 60  
   
......................................................  
 
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 95 102 2018  
MINIMUM TEMPERATURE (F) 65 58 2002  
 
SUNRISE AND SUNSET  
JULY 29 2025..........SUNRISE 6:00 AM PDT SUNSET 7:53 PM PDT  
JULY 30 2025..........SUNRISE 6:01 AM PDT SUNSET 7:53 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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