311  
CDUS46 KMTR 160831  
CLIAPC  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
131 AM PDT MON JUN 16 2025  
   
...............................  
 
   
..THE NAPA AIRPORT CLIMATE SUMMARY FOR JUNE 15 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 74 3:35 PM 93 2004 79 -5 82  
MINIMUM 52 11:59 PM 41 2002 52 0 46  
AVERAGE 63 65 -2 64  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.00  
MONTH TO DATE 0.00 0.00  
SINCE OCT 1 16.08 19.88  
SINCE JAN 1 8.10 13.84  
 
DEGREE DAYS  
HEATING  
YESTERDAY 2 1  
MONTH TO DATE 45 22  
SINCE JUN 1 45 22  
SINCE JUL 1 2696 2454  
 
COOLING  
YESTERDAY 0 0  
MONTH TO DATE 0 31  
SINCE JUN 1 0 31  
SINCE JAN 1 17 41    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION SW (210)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 8.3  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 5:00 AM  
LOWEST 51 1:00 PM  
AVERAGE 72  
   
......................................................  
 
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 79 98 2012  
MINIMUM TEMPERATURE (F) 52 38 2002  
 
SUNRISE AND SUNSET  
JUNE 16 2025..........SUNRISE 5:45 AM PDT SUNSET 8:35 PM PDT  
JUNE 17 2025..........SUNRISE 5:46 AM PDT SUNSET 8:35 PM PDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
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