464  
CDUS46 KMTR 290832  
CLIAPC  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
132 AM PDT MON SEP 29 2025  
   
...............................
 
 
   
..THE NAPA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 28 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 69 4:12 PM 103 2020 79 -10 72  
MINIMUM 60 12:35 AM 40 2001 49 11 50  
AVERAGE 65 64 1 61  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.00  
MONTH TO DATE 0.12 T  
SINCE OCT 1 16.20 19.88  
SINCE JAN 1 8.22 13.84  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 4  
MONTH TO DATE 2 24  
SINCE SEP 1 2 24  
SINCE JUL 1 47 37  
 
COOLING  
YESTERDAY 0 0  
MONTH TO DATE 85 54  
SINCE SEP 1 85 54  
SINCE JAN 1 196 355    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION SW (220)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 5.5  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87 10:00 PM  
LOWEST 73 2:00 PM  
AVERAGE 80  
   
......................................................
 
 
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 79 96 1999  
MINIMUM TEMPERATURE (F) 49 35 2019  
 
SUNRISE AND SUNSET  
SEPTEMBER 29 2025.....SUNRISE 7:03 AM PDT SUNSET 6:54 PM PDT  
SEPTEMBER 30 2025.....SUNRISE 7:04 AM PDT SUNSET 6:53 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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