405  
CDUS46 KMTR 090826  
CLIAPC  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
126 AM PDT FRI MAY 09 2025  
   
...............................  
 
   
..THE NAPA AIRPORT CLIMATE SUMMARY FOR MAY 8 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 80 3:37 PM 92 2001 72 8 80  
2021  
MINIMUM 45 12:23 AM 36 1999 47 -2 44  
AVERAGE 63 59 4 62  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.00  
MONTH TO DATE T 0.69  
SINCE OCT 1 15.88 19.88  
SINCE JAN 1 7.90 13.84  
 
DEGREE DAYS  
HEATING  
YESTERDAY 2 3  
MONTH TO DATE 45 65  
SINCE MAR 1 711 696  
SINCE JUL 1 2566 2344  
 
COOLING  
YESTERDAY 0 0  
MONTH TO DATE 5 0  
SINCE MAR 1 7 0  
SINCE JAN 1 7 0    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION SW (240)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION W (260)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION W (270)  
AVERAGE WIND SPEED 6.1  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 7:00 AM  
LOWEST 39 4:00 PM  
AVERAGE 70  
   
......................................................  
 
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 86 2021  
MINIMUM TEMPERATURE (F) 47 33 2003  
 
SUNRISE AND SUNSET  
MAY 9 2025...........SUNRISE 6:03 AM PDT SUNSET 8:08 PM PDT  
MAY 10 2025...........SUNRISE 6:02 AM PDT SUNSET 8:09 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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