332  
CDUS46 KMTR 080036  
CLIAPC  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
436 PM PST SUN DEC 07 2025  
   
...............................  
 
   
..THE NAPA AIRPORT CLIMATE SUMMARY FOR DECEMBER 7 2025  
 
VALID TODAY AS OF 0400 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 47 4:16 PM 78 2020 58 -11 64  
MINIMUM 42 8:14 AM 22 2009 38 4 38  
AVERAGE 45 48 -3 51  
 
PRECIPITATION (IN)  
TODAY 0.00 0.00  
MONTH TO DATE T 0.00  
SINCE OCT 1 3.46 4.26  
SINCE JAN 1 11.78 18.10  
 
DEGREE DAYS  
HEATING  
TODAY 20 14  
MONTH TO DATE 134 88  
SINCE DEC 1 134 88  
SINCE JUL 1 609 628  
 
COOLING  
TODAY 0 0  
MONTH TO DATE 0 0  
SINCE DEC 1 0 0  
SINCE JAN 1 211 444    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION E (90)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION E (90)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION E (80)  
AVERAGE WIND SPEED 10.5  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 12:00 AM  
LOWEST 86 2:00 PM  
AVERAGE 92  
   
......................................................  
 
THE NAPA AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 58 71 2020  
MINIMUM TEMPERATURE (F) 38 19 2009  
 
SUNRISE AND SUNSET  
DECEMBER 7 2025......SUNRISE 7:13 AM PST SUNSET 4:49 PM PST  
DECEMBER 8 2025......SUNRISE 7:14 AM PST SUNSET 4:49 PM PST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
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