964  
CDUS46 KSGX 180923  
CLIONT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN DIEGO, CA  
123 AM PST WED DEC 18 2024  
   
...............................
 
 
...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR DECEMBER 17 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 80 2:19 PM 85 1998 66 14 78  
MINIMUM 46 7:08 AM 36 2022 43 3 46  
AVERAGE 63 55 8 62  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.87 2008 0.06 -0.06 0.00  
MONTH TO DATE 0.00 0.97 -0.97 T  
SINCE JUL 1 0.15 2.36 -2.21 2.53  
SINCE OCT 1 0.15 2.18 -2.03 0.37  
SINCE JAN 1 16.44 10.72 5.72 20.77  
 
DEGREE DAYS  
HEATING  
YESTERDAY 2 10 -8 3  
MONTH TO DATE 100 161 -61 99  
SINCE DEC 1 100 161 -61 99  
SINCE JUL 1 251 323 -72 192  
 
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 3 RESULTANT WIND DIRECTION NE (50)  
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION NE (40)  
HIGHEST GUST SPEED 40 HIGHEST GUST DIRECTION NE (30)  
AVERAGE WIND SPEED 6.2  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 60 7:00 AM  
LOWEST 14 2:00 PM  
AVERAGE 37  
   
......................................................
 
 
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 81 2003  
MINIMUM TEMPERATURE (F) 43 33 2016  
 
SUNRISE AND SUNSET  
DECEMBER 18 2024......SUNRISE 6:51 AM PST SUNSET 4:44 PM PST  
DECEMBER 19 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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