717  
CDUS46 KMTR 100832  
CLIAPC  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
1232 AM PST WED JAN 10 2024  
   
...............................
 
 
   
..THE NAPA AIRPORT CLIMATE SUMMARY FOR JANUARY 9 2024
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1998 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 59 2:54 PM 65 2012 56 3 60  
MINIMUM 38 11:53 PM 27 2001 38 0 45  
2011  
2012  
AVERAGE 49 47 2 53  
 
PRECIPITATION (IN)  
YESTERDAY 0.06 1.55  
MONTH TO DATE 0.64 4.19  
SINCE OCT 1 6.68 12.61  
SINCE JAN 1 0.64 4.19  
 
DEGREE DAYS  
HEATING  
YESTERDAY 16 12  
MONTH TO DATE 163 114  
SINCE DEC 1 574 664  
SINCE JUL 1 980 1264  
 
COOLING  
YESTERDAY 0 0  
MONTH TO DATE 0 0  
SINCE DEC 1 0 0  
SINCE JAN 1 0 0    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION W (270)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NW (300)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION NW (300)  
AVERAGE WIND SPEED 8.2  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 12:00 PM  
LOWEST 51 4:00 PM  
AVERAGE 72  
   
......................................................
 
 
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 56 63 2012  
2022  
MINIMUM TEMPERATURE (F) 38 28 2011  
 
SUNRISE AND SUNSET  
JANUARY 10 2024.......SUNRISE 7:26 AM PST SUNSET 5:08 PM PST  
JANUARY 11 2024.......SUNRISE 7:26 AM PST SUNSET 5:09 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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