422  
CDUS46 KSGX 190929  
CLIONT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN DIEGO, CA  
129 AM PST TUE DEC 19 2023  
   
...............................  
 
...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR DECEMBER 18 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 71 3:47 PM 81 2003 66 5 62  
MINIMUM 54 6:57 AM 33 2016 43 11 35  
AVERAGE 63 55 8 49  
 
PRECIPITATION (IN)  
YESTERDAY 0.05 0.48 2010 0.06 -0.01 0.00  
MONTH TO DATE 0.05 1.03 -0.98 1.35  
SINCE JUL 1 2.58 2.42 0.16 4.04  
SINCE OCT 1 0.42 2.24 -1.82 3.74  
SINCE JAN 1 21.02 10.78 10.24 5.44  
 
DEGREE DAYS  
HEATING  
YESTERDAY 2 10 -8 16  
MONTH TO DATE 101 171 -70 245  
SINCE DEC 1 101 171 -70 245  
SINCE JUL 1 194 333 -139 471  
 
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 1 RESULTANT WIND DIRECTION NW (320)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 3.3  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 67 11:00 PM  
LOWEST 22 1:00 PM  
AVERAGE 45  
   
......................................................  
 
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 79 2004  
MINIMUM TEMPERATURE (F) 43 33 2012  
2016  
 
SUNRISE AND SUNSET  
DECEMBER 19 2023......SUNRISE 6:51 AM PST SUNSET 4:44 PM PST  
DECEMBER 20 2023......SUNRISE 6:51 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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