904  
CDUS46 KMTR 200839  
CLISTS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
139 AM PDT TUE MAY 20 2025  
   
...............................
 
 
   
..THE SANTA ROSA AIRPORT CLIMATE SUMMARY FOR MAY 19 2025
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1998 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 87 3:41 PM 88 2001 75 12 77  
2022  
MINIMUM 58 4:51 AM 40 1999 47 11 48  
AVERAGE 73 61 12 63  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.78 2019 0.03 -0.03 0.00  
MONTH TO DATE 0.09 0.88 -0.79 0.82  
SINCE OCT 1 41.11 32.89 8.22 36.97  
SINCE JAN 1 15.52 20.90 -5.38 25.41  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 2  
MONTH TO DATE 65 86  
SINCE MAR 1 704 693  
SINCE JUL 1 2510 2345  
 
COOLING  
YESTERDAY 8 0  
MONTH TO DATE 16 12  
SINCE MAR 1 18 12  
SINCE JAN 1 18 12    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 11 RESULTANT WIND DIRECTION NW (330)  
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 12.2  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 67 4:00 AM  
LOWEST 26 3:00 PM  
AVERAGE 47  
   
......................................................
 
 
THE SANTA ROSA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 76 91 2001  
MINIMUM TEMPERATURE (F) 47 39 2009  
 
SUNRISE AND SUNSET  
MAY 20 2025...........SUNRISE 5:55 AM PDT SUNSET 8:21 PM PDT  
MAY 21 2025...........SUNRISE 5:55 AM PDT SUNSET 8:22 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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