717  
CDUS46 KSGX 200926  
CLIRAL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN DIEGO, CA  
226 AM PDT SAT SEP 20 2025  
   
...............................
 
 
...THE RIVERSIDE MUNI AIRPORT CA CLIMATE SUMMARY FOR SEPTEMBER 19 2025...  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1893 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 90 2:51 PM 106 1939 91 -1 75  
MINIMUM 69 5:20 AM 42 1925 62 7 60  
AVERAGE 80 76 4 68  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.65 1963 0.00 0.00 0.00  
MONTH TO DATE 0.05 0.06 -0.01 T  
SINCE JUL 1 0.05 0.20 -0.15 T  
SINCE OCT 1 4.39 9.32 -4.93 12.30  
SINCE JAN 1 4.34 6.91 -2.57 11.26  
 
DEGREE DAYS  
HEATING  
YESTERDAY 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  
YESTERDAY 15 11 4 3  
MONTH TO DATE 278 245 33 292  
SINCE SEP 1 278 245 33 292  
SINCE JAN 1 1659 1561 98 1692    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION W (270)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION W (260)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 4.4  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 78 7:00 AM  
LOWEST 40 2:00 PM  
AVERAGE 59  
   
......................................................
 
 
THE RIVERSIDE MUNI AIRPORT CA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 90 106 1943  
2015  
MINIMUM TEMPERATURE (F) 61 44 1925  
 
SUNRISE AND SUNSET  
SEPTEMBER 20 2025.....SUNRISE 6:37 AM PDT SUNSET 6:49 PM PDT  
SEPTEMBER 21 2025.....SUNRISE 6:37 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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