734  
CDUS46 KSGX 241039  
CLIONT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN DIEGO, CA  
239 AM PST SUN DEC 24 2023  
   
...............................
 
 
...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR DECEMBER 23 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 63 3:24 PM 81 2014 66 -3 69  
MINIMUM 49 3:54 AM 28 1998 43 6 41  
AVERAGE 56 55 1 55  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.00 2021 0.07 -0.07 0.00  
MONTH TO DATE 0.83 1.33 -0.50 1.35  
SINCE JUL 1 3.36 2.72 0.64 4.04  
SINCE OCT 1 1.20 2.54 -1.34 3.74  
SINCE JAN 1 21.80 11.08 10.72 5.44  
 
DEGREE DAYS  
HEATING  
YESTERDAY 9 10 -1 10  
MONTH TO DATE 128 221 -93 300  
SINCE DEC 1 128 221 -93 300  
SINCE JUL 1 221 383 -162 526  
 
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 2 RESULTANT WIND DIRECTION W (290)  
HIGHEST WIND SPEED 8 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 10 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 2.6  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 92 1:00 AM  
LOWEST 50 3:00 PM  
AVERAGE 71  
   
......................................................
 
 
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 86 2005  
MINIMUM TEMPERATURE (F) 43 29 1998  
 
SUNRISE AND SUNSET  
DECEMBER 24 2023......SUNRISE 6:53 AM PST SUNSET 4:47 PM PST  
DECEMBER 25 2023......SUNRISE 6:54 AM PST SUNSET 4:47 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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