822  
CDUS46 KSGX 190059  
CLIRAL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN DIEGO, CA  
559 PM PDT THU SEP 18 2025  
   
...............................
 
 
...THE RIVERSIDE MUNI AIRPORT CA CLIMATE SUMMARY FOR SEPTEMBER 18 2025...  
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 89 11:09 AM 108 1917 91 -2 81  
MINIMUM 70 6:04 AM 42 1933 62 8 55  
AVERAGE 80 76 4 68  
 
PRECIPITATION (IN)  
TODAY MM 1.37 1963 0.00 MM 0.00  
MONTH TO DATE 0.00 0.06 -0.06 T  
SINCE JUL 1 T 0.20 -0.20 T  
SINCE OCT 1 4.34 9.32 -4.98 12.30  
SINCE JAN 1 4.29 6.91 -2.62 11.26  
 
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 15 11 4 3  
MONTH TO DATE 263 234 29 289  
SINCE SEP 1 263 234 29 289  
SINCE JAN 1 1644 1550 94 1689    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION E (100)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION W (260)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION W (270)  
AVERAGE WIND SPEED 5.5  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 4:00 AM  
LOWEST 47 12:00 PM  
AVERAGE 69  
   
......................................................
 
 
THE RIVERSIDE MUNI AIRPORT CA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 91 106 1939  
MINIMUM TEMPERATURE (F) 62 42 1925  
 
SUNRISE AND SUNSET  
SEPTEMBER 18 2025.....SUNRISE 6:35 AM PDT SUNSET 6:52 PM PDT  
SEPTEMBER 19 2025.....SUNRISE 6:36 AM PDT SUNSET 6:50 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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