001  
CDUS46 KMTR 160826  
CLIAPC  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
126 AM PDT MON OCT 16 2023  
   
...............................
 
 
   
..THE NAPA AIRPORT CLIMATE SUMMARY FOR OCTOBER 15 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 81 3:24 PM 101 2020 76 5 70  
MINIMUM 55 11:50 PM 37 2013 46 9 56  
AVERAGE 68 61 7 63  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.00  
MONTH TO DATE T 0.00  
SINCE OCT 1 T 0.00  
SINCE JAN 1 21.21 3.46  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 2  
MONTH TO DATE 17 33  
SINCE SEP 1 36 38  
SINCE JUL 1 44 53  
 
COOLING  
YESTERDAY 3 0  
MONTH TO DATE 46 2  
SINCE SEP 1 99 168  
SINCE JAN 1 372 479    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION SW (210)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION SW (220)  
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 4.1  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 7:00 AM  
LOWEST 38 4:00 PM  
AVERAGE 66  
   
......................................................
 
 
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 76 97 2020  
MINIMUM TEMPERATURE (F) 46 37 2019  
 
SUNRISE AND SUNSET  
OCTOBER 16 2023.......SUNRISE 7:19 AM PDT SUNSET 6:30 PM PDT  
OCTOBER 17 2023.......SUNRISE 7:20 AM PDT SUNSET 6:29 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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