444  
CDUS46 KSGX 130032  
CLIONT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN DIEGO, CA  
432 PM PST TUE DEC 12 2023  
   
...............................
 
 
...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR DECEMBER 12 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 70 2:29 PM 84 2010 67 3 49  
MINIMUM 43 6:48 AM 36 2007 43 0 37  
AVERAGE 57 55 2 43  
 
PRECIPITATION (IN)  
TODAY 0.00 1.57 2014 0.06 -0.06 0.23  
MONTH TO DATE T 0.66 -0.66 1.35  
SINCE JUL 1 2.53 2.05 0.48 4.04  
SINCE OCT 1 0.37 1.87 -1.50 3.74  
SINCE JAN 1 20.97 10.41 10.56 5.44  
 
DEGREE DAYS  
HEATING  
TODAY 8 10 -2 22  
MONTH TO DATE 77 111 -34 153  
SINCE DEC 1 77 111 -34 153  
SINCE JUL 1 170 273 -103 379  
 
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 0 RESULTANT WIND DIRECTION NW (310)  
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION W (260)  
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION W (250)  
AVERAGE WIND SPEED 2.8  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 58 3:00 AM  
LOWEST 19 2:00 PM  
AVERAGE 39  
   
......................................................
 
 
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 67 83 2017  
MINIMUM TEMPERATURE (F) 43 36 2015  
 
SUNRISE AND SUNSET  
DECEMBER 12 2023......SUNRISE 6:46 AM PST SUNSET 4:42 PM PST  
DECEMBER 13 2023......SUNRISE 6:47 AM PST SUNSET 4:42 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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