442  
CDUS46 KMTR 180830  
CLIAPC  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
1230 AM PST SAT FEB 18 2023  
   
...............................
 
 
   
..THE NAPA AIRPORT CLIMATE SUMMARY FOR FEBRUARY 17 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 3:02 PM 75 2020 61 3 69  
MINIMUM 37 11:44 PM 31 2018 40 -3 38  
2021  
AVERAGE 51 51 0 54  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.00  
MONTH TO DATE 0.83 0.00  
SINCE OCT 1 18.03 15.38  
SINCE JAN 1 9.61 0.24  
 
DEGREE DAYS  
HEATING  
YESTERDAY 14 11  
MONTH TO DATE 246 230  
SINCE DEC 1 1226 1307  
SINCE JUL 1 1826 1867  
 
COOLING  
YESTERDAY 0 0  
MONTH TO DATE 0 0  
SINCE DEC 1 0 0  
SINCE JAN 1 0 0    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION N (340)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 3.2  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 73 11:00 PM  
LOWEST 28 3:00 PM  
AVERAGE 51  
   
......................................................
 
 
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 62 67 2022  
MINIMUM TEMPERATURE (F) 40 31 2003  
 
SUNRISE AND SUNSET  
FEBRUARY 18 2023......SUNRISE 6:56 AM PST SUNSET 5:51 PM PST  
FEBRUARY 19 2023......SUNRISE 6:55 AM PST SUNSET 5:52 PM PST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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