547  
CDUS46 KMTR 280843  
CLIAPC  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
143 AM PDT THU OCT 28 2021  
   
...............................
 
 
   
..THE NAPA AIRPORT CLIMATE SUMMARY FOR OCTOBER 27 2021
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1998 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 74 3:30 PM 90 2003 73 1 79  
MINIMUM 52 4:28 AM 32 2011 44 8 44  
AVERAGE 63 58 5 62  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.00  
MONTH TO DATE 6.71 0.00  
SINCE OCT 1 6.71 0.00  
SINCE JAN 1 12.05 3.76  
 
DEGREE DAYS  
HEATING  
YESTERDAY 2 3  
MONTH TO DATE 152 32  
SINCE SEP 1 177 43  
SINCE JUL 1 220 55  
 
COOLING  
YESTERDAY 0 0  
MONTH TO DATE 17 73  
SINCE SEP 1 65 241  
SINCE JAN 1 251 579    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION S (200)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 2.6  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 7:00 AM  
LOWEST 64 4:00 PM  
AVERAGE 81  
   
......................................................
 
 
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 88 2003  
MINIMUM TEMPERATURE (F) 44 33 2004  
 
SUNRISE AND SUNSET  
OCTOBER 28 2021.......SUNRISE 7:31 AM PDT SUNSET 6:14 PM PDT  
OCTOBER 29 2021.......SUNRISE 7:32 AM PDT SUNSET 6:13 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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