166  
CDUS46 KMTR 050837  
CLIAPC  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
137 AM PDT SAT JUL 05 2025  
   
...............................  
 
   
..THE NAPA AIRPORT CLIMATE SUMMARY FOR JULY 4 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 76 4:19 PM 93 2007 79 -3 88  
MINIMUM 50 6:28 AM 45 1999 54 -4 57  
AVERAGE 63 67 -4 73  
 
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 0  
MONTH TO DATE 10 0  
SINCE JUN 1 74 37  
SINCE JUL 1 10 0  
 
COOLING  
YESTERDAY 0 8  
MONTH TO DATE 0 41  
SINCE JUN 1 8 97  
SINCE JAN 1 25 107    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 11 RESULTANT WIND DIRECTION SW (230)  
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION SW (220)  
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION SW (230)  
AVERAGE WIND SPEED 12.3  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 89 5:00 AM  
LOWEST 40 4:00 PM  
AVERAGE 65  
   
......................................................  
 
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 79 89 2007  
2024  
MINIMUM TEMPERATURE (F) 54 45 2018  
 
SUNRISE AND SUNSET  
JULY 5 2025..........SUNRISE 5:52 AM PDT SUNSET 8:36 PM PDT  
JULY 6 2025..........SUNRISE 5:52 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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