460  
CDUS46 KSGX 171023  
CLIONT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN DIEGO, CA  
223 AM PST TUE DEC 17 2024  
   
...............................
 
 
...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR DECEMBER 16 2024...  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1998 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 73 1:48 PM 84 2013 66 7 80  
MINIMUM 44 5:11 AM 33 2001 43 1 45  
AVERAGE 59 55 4 63  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.39 2002 0.06 -0.06 0.00  
MONTH TO DATE 0.00 0.91 -0.91 T  
SINCE JUL 1 0.15 2.30 -2.15 2.53  
SINCE OCT 1 0.15 2.12 -1.97 0.37  
SINCE JAN 1 16.44 10.66 5.78 20.77  
 
DEGREE DAYS  
HEATING  
YESTERDAY 6 10 -4 2  
MONTH TO DATE 98 151 -53 96  
SINCE DEC 1 98 151 -53 96  
SINCE JUL 1 249 313 -64 189  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 2  
SINCE DEC 1 0 0 0 2  
SINCE JAN 1 2027 1967 60 1695    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION SW (240)  
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION SW (240)  
AVERAGE WIND SPEED 2.9  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 66 12:00 AM  
LOWEST 14 1:00 PM  
AVERAGE 40  
   
......................................................
 
 
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 85 1998  
MINIMUM TEMPERATURE (F) 43 36 2022  
 
SUNRISE AND SUNSET  
DECEMBER 17 2024......SUNRISE 6:50 AM PST SUNSET 4:44 PM PST  
DECEMBER 18 2024......SUNRISE 6:51 AM PST SUNSET 4:44 PM PST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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