295  
CDUS46 KMTR 220036  
CLISTS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
536 PM PDT SUN SEP 21 2025  
   
...............................  
 
   
..THE SANTA ROSA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 21 2025  
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 87 3:43 PM 103 2003 83 4 78  
MINIMUM 54 5:18 AM 40 2012 49 5 52  
AVERAGE 71 66 5 65  
 
PRECIPITATION (IN)  
TODAY 0.00 0.24 2013 0.01 -0.01 0.00  
MONTH TO DATE 0.14 0.06 0.08 0.00  
SINCE OCT 1 41.26 33.71 7.55 37.05  
SINCE JAN 1 15.67 21.72 -6.05 25.49  
 
DEGREE DAYS  
HEATING  
TODAY 0 0  
MONTH TO DATE 0 8  
SINCE SEP 1 0 8  
SINCE JUL 1 17 17  
 
COOLING  
TODAY 6 0  
MONTH TO DATE 83 51  
SINCE SEP 1 83 51  
SINCE JAN 1 362 555    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION S (170)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION SE (140)  
AVERAGE WIND SPEED 4.0  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 4:00 AM  
LOWEST 37 3:00 PM  
AVERAGE 69  
   
......................................................  
 
THE SANTA ROSA AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 83 103 2003  
MINIMUM TEMPERATURE (F) 49 41 2012  
2017  
 
SUNRISE AND SUNSET  
SEPTEMBER 21 2025.....SUNRISE 6:58 AM PDT SUNSET 7:09 PM PDT  
SEPTEMBER 22 2025.....SUNRISE 6:59 AM PDT SUNSET 7:08 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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