516  
CDUS46 KMTR 030038  
CLIAPC  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
538 PM PDT THU OCT 02 2025  
   
...............................  
 
   
..THE NAPA AIRPORT CLIMATE SUMMARY FOR OCTOBER 2 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 72 4:51 PM 100 2024 79 -7 100  
MINIMUM 61 9:10 AM 36 2019 49 12 56  
AVERAGE 67 64 3 78  
 
PRECIPITATION (IN)  
TODAY 0.04 0.00  
MONTH TO DATE 0.08 0.00  
SINCE OCT 1 0.08 0.00  
SINCE JAN 1 8.40 13.84  
 
DEGREE DAYS  
HEATING  
TODAY 0 0  
MONTH TO DATE 0 0  
SINCE SEP 1 2 26  
SINCE JUL 1 47 39  
 
COOLING  
TODAY 2 13  
MONTH TO DATE 3 23  
SINCE SEP 1 93 81  
SINCE JAN 1 204 382    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION W (270)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION W (260)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION W (260)  
AVERAGE WIND SPEED 8.0  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 1:00 AM  
LOWEST 59 4:00 PM  
AVERAGE 80  
   
......................................................  
 
THE NAPA AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 78 94 2014  
MINIMUM TEMPERATURE (F) 48 38 2005  
 
SUNRISE AND SUNSET  
OCTOBER 2 2025.......SUNRISE 7:06 AM PDT SUNSET 6:50 PM PDT  
OCTOBER 3 2025.......SUNRISE 7:07 AM PDT SUNSET 6:48 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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