768  
CDUS46 KSGX 180922  
CLIRAL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN DIEGO, CA  
222 AM PDT SUN MAY 18 2025  
   
...............................
 
 
   
..THE RIVERSIDE MUNI AIRPORT CA CLIMATE SUMMARY FOR MAY 17 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 68 2:52 PM 103 1920 80 -12 72  
2008  
MINIMUM 55 4:53 AM 40 1908 56 -1 55  
1943  
AVERAGE 62 68 -6 64  
 
PRECIPITATION (IN)  
YESTERDAY T 0.15 1994 0.01 -0.01 0.00  
MONTH TO DATE 0.48 0.15 0.33 0.12  
SINCE JUL 1 4.31 9.31 -5.00 14.63  
SINCE OCT 1 4.31 9.06 -4.75 12.30  
SINCE JAN 1 4.26 6.65 -2.39 11.26  
 
DEGREE DAYS  
HEATING  
YESTERDAY 3 1 2 1  
MONTH TO DATE 27 26 1 18  
SINCE MAR 1 355 325 30 396  
SINCE JUL 1 1161 1378 -217 1253  
 
COOLING  
YESTERDAY 0 4 -4 0  
MONTH TO DATE 68 54 14 17  
SINCE MAR 1 116 120 -4 35  
SINCE JAN 1 130 133 -3 38    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION W (280)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION W (270)  
AVERAGE WIND SPEED 6.9  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 89 4:00 AM  
LOWEST 52 3:00 PM  
AVERAGE 71  
   
......................................................
 
 
THE RIVERSIDE MUNI AIRPORT CA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 80 103 2008  
MINIMUM TEMPERATURE (F) 56 40 1903  
 
SUNRISE AND SUNSET  
MAY 18 2025...........SUNRISE 5:46 AM PDT SUNSET 7:47 PM PDT  
MAY 19 2025...........SUNRISE 5:46 AM PDT SUNSET 7:47 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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