057  
CDUS46 KMTR 040836  
CLIAPC  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
1236 AM PST SAT JAN 04 2025  
   
...............................
 
 
   
..THE NAPA AIRPORT CLIMATE SUMMARY FOR JANUARY 3 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 59 1:49 PM 66 2014 56 3 59  
MINIMUM 41 11:22 PM 26 2009 38 3 39  
AVERAGE 50 47 3 49  
 
PRECIPITATION (IN)  
YESTERDAY 0.27 0.05  
MONTH TO DATE 0.28 0.47  
SINCE OCT 1 8.26 6.51  
SINCE JAN 1 0.28 0.47  
 
DEGREE DAYS  
HEATING  
YESTERDAY 15 16  
MONTH TO DATE 50 50  
SINCE DEC 1 435 461  
SINCE JUL 1 975 867  
 
COOLING  
YESTERDAY 0 0  
MONTH TO DATE 0 0  
SINCE DEC 1 0 0  
SINCE JAN 1 0 0    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION SW (240)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION W (260)  
AVERAGE WIND SPEED 5.8  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 8:00 AM  
LOWEST 71 12:00 AM  
AVERAGE 86  
   
......................................................
 
 
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 56 67 2012  
2014  
MINIMUM TEMPERATURE (F) 38 22 2009  
 
SUNRISE AND SUNSET  
JANUARY 4 2025.......SUNRISE 7:26 AM PST SUNSET 5:03 PM PST  
JANUARY 5 2025.......SUNRISE 7:26 AM PST SUNSET 5:04 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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