390  
CDUS46 KMTR 160038  
CLIAPC  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
538 PM PDT TUE JUL 15 2025  
   
...............................  
 
   
..THE NAPA AIRPORT CLIMATE SUMMARY FOR JULY 15 2025  
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 70 1:26 PM 96 1998 79 -9 76  
MINIMUM 53 12:36 AM 44 2004 55 -2 55  
AVERAGE 62 67 -5 66  
 
PRECIPITATION (IN)  
TODAY 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  
TODAY 3 0  
MONTH TO DATE 26 0  
SINCE JUN 1 90 37  
SINCE JUL 1 26 0  
 
COOLING  
TODAY 0 1  
MONTH TO DATE 8 96  
SINCE JUN 1 16 152  
SINCE JAN 1 33 162    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 11 RESULTANT WIND DIRECTION SW (230)  
HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 13.8  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 12:00 AM  
LOWEST 65 12:00 PM  
AVERAGE 81  
   
......................................................  
 
THE NAPA AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 79 103 2017  
MINIMUM TEMPERATURE (F) 55 48 2009  
 
SUNRISE AND SUNSET  
JULY 15 2025..........SUNRISE 5:58 AM PDT SUNSET 8:32 PM PDT  
JULY 16 2025..........SUNRISE 5:59 AM PDT SUNSET 8:31 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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