543  
CDUS46 KSGX 112322  
CLIONT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN DIEGO, CA  
422 PM PDT SUN MAY 11 2025  
   
...............................  
 
   
..THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR MAY 11 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 97R 12:12 PM 97 2013 79 18 81  
MINIMUM 68 5:23 AM 46 2022 55 13 57  
AVERAGE 83 67 16 69  
 
PRECIPITATION (IN)  
TODAY 0.00 T 2018 0.01 -0.01 0.00  
2019  
2022  
MONTH TO DATE 0.24 0.15 0.09 0.15  
SINCE JUL 1 6.11 11.47 -5.36 19.80  
SINCE OCT 1 6.11 11.29 -5.18 17.64  
SINCE JAN 1 5.96 8.19 -2.23 16.29  
 
DEGREE DAYS  
HEATING  
TODAY 0 1 -1 0  
MONTH TO DATE 25 20 5 16  
SINCE MAR 1 369 297 72 406  
SINCE JUL 1 1127 1271 -144 1294  
 
COOLING  
TODAY 18 4 14 4  
MONTH TO DATE 63 34 29 13  
SINCE MAR 1 120 114 6 38  
SINCE JAN 1 139 127 12 38    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION SW (230)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION W (260)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION W (260)  
AVERAGE WIND SPEED 4.0  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 49 4:00 AM  
LOWEST 15 1:00 PM  
AVERAGE 32  
   
......................................................  
 
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 79 103 2013  
MINIMUM TEMPERATURE (F) 55 47 2000  
 
SUNRISE AND SUNSET  
MAY 11 2025...........SUNRISE 5:52 AM PDT SUNSET 7:42 PM PDT  
MAY 12 2025...........SUNRISE 5:51 AM PDT SUNSET 7:43 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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