482  
CDUS46 KMTR 020841  
CLIAPC  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
1241 AM PST FRI DEC 02 2022  
   
...............................
 
 
   
..THE NAPA AIRPORT CLIMATE SUMMARY FOR DECEMBER 1 2022
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1998 TO 2022  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 55 4:38 AM 69 2011 60 -5 67  
MINIMUM 34 11:59 PM 20 2007 38 -4 42  
AVERAGE 45 49 -4 55  
 
PRECIPITATION (IN)  
YESTERDAY 0.50 0.00  
MONTH TO DATE 0.50 0.00  
SINCE OCT 1 1.47 7.93  
SINCE JAN 1 4.93 13.27  
 
DEGREE DAYS  
HEATING  
YESTERDAY 20 10  
MONTH TO DATE 20 10  
SINCE DEC 1 20 10  
SINCE JUL 1 620 570  
 
COOLING  
YESTERDAY 0 0  
MONTH TO DATE 0 0  
SINCE DEC 1 0 0  
SINCE JAN 1 487 251    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION SW (210)  
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION SW (220)  
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 8.2  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 86 11:00 AM  
LOWEST 63 1:00 AM  
AVERAGE 75  
   
......................................................
 
 
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 60 75 2011  
MINIMUM TEMPERATURE (F) 38 24 2006  
 
SUNRISE AND SUNSET  
DECEMBER 2 2022......SUNRISE 7:08 AM PST SUNSET 4:49 PM PST  
DECEMBER 3 2022......SUNRISE 7:09 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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