983  
CDUS46 KSGX 210022  
CLIONT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN DIEGO, CA  
422 PM PST FRI DEC 20 2024  
   
...............................
 
 
...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR DECEMBER 20 2024...  
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 78 2:47 PM 82 2020 66 12 68  
MINIMUM 51 7:10 AM 33 2012 43 8 55  
AVERAGE 65 55 10 62  
 
PRECIPITATION (IN)  
TODAY 0.00 0.69 2002 0.06 -0.06 0.36  
MONTH TO DATE 0.00 1.15 -1.15 0.47  
SINCE JUL 1 0.15 2.54 -2.39 3.00  
SINCE OCT 1 0.15 2.36 -2.21 0.84  
SINCE JAN 1 16.44 10.90 5.54 21.24  
 
DEGREE DAYS  
HEATING  
TODAY 0 10 -10 3  
MONTH TO DATE 100 191 -91 109  
SINCE DEC 1 100 191 -91 109  
SINCE JUL 1 251 353 -102 202  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 5 0 5 2  
SINCE DEC 1 5 0 5 2  
SINCE JAN 1 2032 1967 65 1695    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION W (260)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 1.2  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 58 4:00 AM  
LOWEST 15 1:00 PM  
AVERAGE 37  
   
......................................................
 
 
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 82 2005  
2020  
MINIMUM TEMPERATURE (F) 43 33 2012  
 
SUNRISE AND SUNSET  
DECEMBER 20 2024......SUNRISE 6:52 AM PST SUNSET 4:45 PM PST  
DECEMBER 21 2024......SUNRISE 6:52 AM PST SUNSET 4:45 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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