162  
CDUS46 KMTR 200826  
CLIAPC  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
1226 AM PST MON JAN 20 2025  
   
...............................
 
 
   
..THE NAPA AIRPORT CLIMATE SUMMARY FOR JANUARY 19 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 49 3:59 PM 70 2014 57 -8 56  
MINIMUM 31 1:55 AM 24 2007 38 -7 49  
AVERAGE 40 48 -8 53  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.22  
MONTH TO DATE 0.28 1.98  
SINCE OCT 1 8.26 8.02  
SINCE JAN 1 0.28 1.98  
 
DEGREE DAYS  
HEATING  
YESTERDAY 25 12  
MONTH TO DATE 301 334  
SINCE DEC 1 686 745  
SINCE JUL 1 1226 1151  
 
COOLING  
YESTERDAY 0 0  
MONTH TO DATE 0 0  
SINCE DEC 1 0 0  
SINCE JAN 1 0 0    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION N (340)  
HIGHEST WIND SPEED 7 HIGHEST WIND DIRECTION N (360)  
HIGHEST GUST SPEED 9 HIGHEST GUST DIRECTION W (260)  
AVERAGE WIND SPEED 2.8  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 12:00 AM  
LOWEST 83 4:00 PM  
AVERAGE 92  
   
......................................................
 
 
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 57 71 2014  
MINIMUM TEMPERATURE (F) 38 25 2007  
 
SUNRISE AND SUNSET  
JANUARY 20 2025.......SUNRISE 7:22 AM PST SUNSET 5:19 PM PST  
JANUARY 21 2025.......SUNRISE 7:21 AM PST SUNSET 5:20 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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