865  
CDUS46 KMTR 070837  
CLIAPC  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
137 AM PDT SUN MAY 07 2023  
   
...............................
 
 
   
..THE NAPA AIRPORT CLIMATE SUMMARY FOR MAY 6 2023
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1998 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 64 3:13 PM 90 2007 71 -7 72  
MINIMUM 48 11:59 PM 38 2003 46 2 52  
AVERAGE 56 59 -3 62  
 
PRECIPITATION (IN)  
YESTERDAY 0.15 0.00  
MONTH TO DATE 0.63 0.00  
SINCE OCT 1 29.42 17.71  
SINCE JAN 1 21.00 2.57  
 
DEGREE DAYS  
HEATING  
YESTERDAY 9 3  
MONTH TO DATE 58 31  
SINCE MAR 1 742 704  
SINCE JUL 1 2772 2776  
 
COOLING  
YESTERDAY 0 0  
MONTH TO DATE 0 0  
SINCE MAR 1 3 7  
SINCE JAN 1 3 7    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 11 RESULTANT WIND DIRECTION SW (210)  
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 11.9  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 4:00 AM  
LOWEST 60 3:00 PM  
AVERAGE 75  
   
......................................................
 
 
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 93 2007  
MINIMUM TEMPERATURE (F) 46 37 2010  
 
SUNRISE AND SUNSET  
MAY 7 2023...........SUNRISE 6:06 AM PDT SUNSET 8:06 PM PDT  
MAY 8 2023...........SUNRISE 6:05 AM PDT SUNSET 8:07 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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