199  
CDUS46 KSGX 170026  
CLIONT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN DIEGO, CA  
426 PM PST SAT DEC 16 2023  
   
...............................
 
 
...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR DECEMBER 16 2023...  
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 80 3:01 PM 84 2013 66 14 65  
MINIMUM 45 7:12 AM 33 2001 43 2 40  
AVERAGE 63 55 8 53  
 
PRECIPITATION (IN)  
TODAY 0.00 1.39 2002 0.06 -0.06 0.00  
MONTH TO DATE T 0.91 -0.91 1.35  
SINCE JUL 1 2.53 2.30 0.23 4.04  
SINCE OCT 1 0.37 2.12 -1.75 3.74  
SINCE JAN 1 20.97 10.66 10.31 5.44  
 
DEGREE DAYS  
HEATING  
TODAY 2 10 -8 12  
MONTH TO DATE 96 151 -55 214  
SINCE DEC 1 96 151 -55 214  
SINCE JUL 1 189 313 -124 440  
 
COOLING  
TODAY 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 (20)  
HIGHEST WIND SPEED 7 HIGHEST WIND DIRECTION NE (30)  
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION SW (230)  
AVERAGE WIND SPEED 2.4  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 45 4:00 AM  
LOWEST 11 3:00 PM  
AVERAGE 28  
   
......................................................
 
 
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 85 1998  
MINIMUM TEMPERATURE (F) 43 36 2022  
 
SUNRISE AND SUNSET  
DECEMBER 16 2023......SUNRISE 6:49 AM PST SUNSET 4:43 PM PST  
DECEMBER 17 2023......SUNRISE 6:50 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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