677  
CDUS46 KSGX 151035  
CLIONT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN DIEGO, CA  
235 AM PST FRI DEC 15 2023  
   
...............................
 
 
...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR DECEMBER 14 2023...  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1998 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 74 3:43 PM 82 2017 66 8 60  
MINIMUM 42 MM 32 2023 43 -1 37  
AVERAGE 58 55 3 49  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.04 2021 0.06 -0.06 0.00  
MONTH TO DATE T 0.78 -0.78 1.35  
SINCE JUL 1 2.53 2.17 0.36 4.04  
SINCE OCT 1 0.37 1.99 -1.62 3.74  
SINCE JAN 1 20.97 10.53 10.44 5.44  
 
DEGREE DAYS  
HEATING  
YESTERDAY 7 10 -3 16  
MONTH TO DATE 91 131 -40 187  
SINCE DEC 1 91 131 -40 187  
SINCE JUL 1 184 293 -109 413  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 2 0 2 0  
SINCE DEC 1 2 0 2 0  
SINCE JAN 1 1695 1967 -272 2301    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION N (360)  
HIGHEST WIND SPEED 8 HIGHEST WIND DIRECTION N (20)  
HIGHEST GUST SPEED 10 HIGHEST GUST DIRECTION NE (40)  
AVERAGE WIND SPEED 2.6  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG W/VISIBILITY <= 1/4 MILE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 61 4:00 AM  
LOWEST 17 4:00 PM  
AVERAGE 39  
   
......................................................
 
 
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 81 2013  
2017  
MINIMUM TEMPERATURE (F) 43 32 2015  
 
SUNRISE AND SUNSET  
DECEMBER 15 2023......SUNRISE 6:48 AM PST SUNSET 4:43 PM PST  
DECEMBER 16 2023......SUNRISE 6:49 AM PST SUNSET 4:43 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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