539  
CDUS46 KMTR 270831  
CLISTS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
131 AM PDT SAT SEP 27 2025  
   
...............................  
 
   
..THE SANTA ROSA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 26 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 89 2:40 PM 101 2009 82 7 87  
MINIMUM 53 11:26 PM 43 2004 49 4 55  
AVERAGE 71 65 6 71  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.55 2014 0.01 -0.01 0.00  
MONTH TO DATE 0.14 0.09 0.05 0.00  
SINCE OCT 1 41.26 33.74 7.52 37.05  
SINCE JAN 1 15.67 21.75 -6.08 25.49  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0  
MONTH TO DATE 0 9  
SINCE SEP 1 0 9  
SINCE JUL 1 17 18  
 
COOLING  
YESTERDAY 6 6  
MONTH TO DATE 111 79  
SINCE SEP 1 111 79  
SINCE JAN 1 390 583    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION S (160)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION SE (150)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION SE (150)  
AVERAGE WIND SPEED 4.0  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 5:00 AM  
LOWEST 27 2:00 PM  
AVERAGE 62  
   
......................................................  
 
THE SANTA ROSA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 82 102 2010  
2020  
MINIMUM TEMPERATURE (F) 48 43 2008  
2013  
 
SUNRISE AND SUNSET  
SEPTEMBER 27 2025.....SUNRISE 7:04 AM PDT SUNSET 7:00 PM PDT  
SEPTEMBER 28 2025.....SUNRISE 7:05 AM PDT SUNSET 6:58 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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