157  
CDUS46 KMTR 210844  
CLIAPC  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
1244 AM PST SUN JAN 21 2024  
   
...............................
 
 
   
..THE NAPA AIRPORT CLIMATE SUMMARY FOR JANUARY 20 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 60 11:16 AM 71 2014 57 3 60  
MINIMUM 52 11:59 PM 25 2007 38 14 36  
AVERAGE 56 48 8 48  
 
PRECIPITATION (IN)  
YESTERDAY 0.27 0.00  
MONTH TO DATE 2.25 8.78  
SINCE OCT 1 8.29 17.20  
SINCE JAN 1 2.25 8.78  
 
DEGREE DAYS  
HEATING  
YESTERDAY 9 17  
MONTH TO DATE 343 269  
SINCE DEC 1 754 819  
SINCE JUL 1 1160 1419  
 
COOLING  
YESTERDAY 0 0  
MONTH TO DATE 0 0  
SINCE DEC 1 0 0  
SINCE JAN 1 0 0    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION S (160)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION SW (220)  
AVERAGE WIND SPEED 7.7  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 12:00 PM  
LOWEST 78 11:00 AM  
AVERAGE 86  
   
......................................................
 
 
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 57 68 2007  
2022  
MINIMUM TEMPERATURE (F) 38 26 2008  
 
SUNRISE AND SUNSET  
JANUARY 21 2024.......SUNRISE 7:22 AM PST SUNSET 5:19 PM PST  
JANUARY 22 2024.......SUNRISE 7:21 AM PST SUNSET 5:20 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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