873  
CDUS46 KMTR 010838  
CLIAPC  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
138 AM PDT WED OCT 01 2025  
   
...............................
 
 
   
..THE NAPA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 30 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 73 12:54 PM 98 2001 79 -6 91  
MINIMUM 63 11:59 PM 37 2009 49 14 47  
AVERAGE 68 64 4 69  
 
PRECIPITATION (IN)  
YESTERDAY 0.07 0.00  
MONTH TO DATE 0.22 T  
SINCE OCT 1 16.30 19.88  
SINCE JAN 1 8.32 13.84  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0  
MONTH TO DATE 2 26  
SINCE SEP 1 2 26  
SINCE JUL 1 47 39  
 
COOLING  
YESTERDAY 3 4  
MONTH TO DATE 90 58  
SINCE SEP 1 90 58  
SINCE JAN 1 201 359    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION SW (210)  
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION SW (220)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION SW (220)  
AVERAGE WIND SPEED 10.2  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 1:00 AM  
LOWEST 66 12:00 PM  
AVERAGE 82  
   
......................................................
 
 
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 79 99 2024  
MINIMUM TEMPERATURE (F) 49 38 2006  
2019  
 
SUNRISE AND SUNSET  
OCTOBER 1 2025.......SUNRISE 7:05 AM PDT SUNSET 6:51 PM PDT  
OCTOBER 2 2025.......SUNRISE 7:06 AM PDT SUNSET 6:50 PM PDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab CA Page Main Text Page