957  
CDUS46 KSGX 220024  
CLIONT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN DIEGO, CA  
524 PM PDT THU SEP 21 2023  
   
...............................
 
 
...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR SEPTEMBER 21 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 76 2:51 PM 105 2003 90 -14 85  
MINIMUM 62 3:05 AM 53 2007 63 -1 60  
AVERAGE 69 76 -7 73  
 
PRECIPITATION (IN)  
TODAY 0.00 0.00 2004 0.01 -0.01 0.00  
2005  
2006  
MONTH TO DATE 0.24 0.06 0.18 0.27  
SINCE JUL 1 2.16 0.14 2.02 0.30  
SINCE OCT 1 25.84 11.60 14.24 9.32  
SINCE JAN 1 20.60 8.50 12.10 1.70  
 
DEGREE DAYS  
HEATING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE SEP 1 0 0 0 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
TODAY 4 12 -8 8  
MONTH TO DATE 209 286 -77 350  
SINCE SEP 1 209 286 -77 350  
SINCE JAN 1 1397 1659 -262 1972    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION SW (240)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SW (220)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION W (260)  
AVERAGE WIND SPEED 6.8  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 84 12:00 AM  
LOWEST 48 2:00 PM  
AVERAGE 66  
   
......................................................
 
 
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 90 105 2009  
MINIMUM TEMPERATURE (F) 63 54 2017  
 
SUNRISE AND SUNSET  
SEPTEMBER 21 2023.....SUNRISE 6:38 AM PDT SUNSET 6:49 PM PDT  
SEPTEMBER 22 2023.....SUNRISE 6:38 AM PDT SUNSET 6:47 PM PDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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