269  
CDUS46 KMTR 120829  
CLIAPC  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
129 AM PDT SUN MAY 12 2024  
   
...............................
 
 
   
..THE NAPA AIRPORT CLIMATE SUMMARY FOR MAY 11 2024
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1998 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 74 1:35 PM 84 2018 72 2 71  
MINIMUM 48 5:06 AM 32 2022 47 1 42  
AVERAGE 61 60 1 57  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.00  
MONTH TO DATE 0.69 0.70  
SINCE OCT 1 19.88 29.49  
SINCE JAN 1 13.84 21.07  
 
DEGREE DAYS  
HEATING  
YESTERDAY 4 8  
MONTH TO DATE 69 103  
SINCE MAR 1 700 787  
SINCE JUL 1 2348 2817  
 
COOLING  
YESTERDAY 0 0  
MONTH TO DATE 5 0  
SINCE MAR 1 5 3  
SINCE JAN 1 5 3    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION S (200)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 6.9  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 5:00 AM  
LOWEST 57 12:00 PM  
AVERAGE 79  
   
......................................................
 
 
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 84 2014  
MINIMUM TEMPERATURE (F) 47 37 2009  
 
SUNRISE AND SUNSET  
MAY 12 2024...........SUNRISE 6:00 AM PDT SUNSET 8:11 PM PDT  
MAY 13 2024...........SUNRISE 5:59 AM PDT SUNSET 8:12 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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