166  
CDUS46 KSGX 190925  
CLIRAL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN DIEGO, CA  
225 AM PDT MON MAY 19 2025  
   
...............................
 
 
   
..THE RIVERSIDE MUNI AIRPORT CA CLIMATE SUMMARY FOR MAY 18 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 74 3:01 PM 103 2008 80 -6 77  
MINIMUM 57 1:01 AM 40 1903 56 1 55  
AVERAGE 66 68 -2 66  
 
PRECIPITATION (IN)  
YESTERDAY T 0.22 2011 0.00 0.00 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 0 1 -1 0  
MONTH TO DATE 27 27 0 18  
SINCE MAR 1 355 326 29 396  
SINCE JUL 1 1161 1379 -218 1253  
 
COOLING  
YESTERDAY 1 4 -3 1  
MONTH TO DATE 69 58 11 18  
SINCE MAR 1 117 124 -7 36  
SINCE JAN 1 131 137 -6 39    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION W (260)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 6.0  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 78 5:00 AM  
LOWEST 42 1:00 PM  
AVERAGE 60  
   
......................................................
 
 
THE RIVERSIDE MUNI AIRPORT CA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 80 104 1942  
MINIMUM TEMPERATURE (F) 56 40 1933  
1945  
1950  
 
SUNRISE AND SUNSET  
MAY 19 2025...........SUNRISE 5:46 AM PDT SUNSET 7:47 PM PDT  
MAY 20 2025...........SUNRISE 5:45 AM PDT SUNSET 7:48 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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