568  
CDUS46 KMTR 270904  
CLIAPC  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
204 AM PDT THU JUL 27 2017  
 
   
...............................
 
 
   
..THE NAPA AIRPORT CLIMATE SUMMARY FOR JULY 26 2017
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1998 TO 2017  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 83 222 PM 93 2008 78 5 92  
MINIMUM 57 1229 AM 48 2016 53 4 48  
AVERAGE 70 65 5 70  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.00  
MONTH TO DATE T 0.00  
SINCE OCT 1 37.11 18.86  
SINCE JAN 1 28.16 14.67  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0  
MONTH TO DATE 2 34  
SINCE JUN 1 19 60  
SINCE JUL 1 2 34  
 
COOLING  
YESTERDAY 5 5  
MONTH TO DATE 106 27  
SINCE JUN 1 229 78  
SINCE JAN 1 263 89    
..............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION SW (230)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 9.2  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.1  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 86 1200 AM  
LOWEST 42 400 PM  
AVERAGE 64  
   
......................................................
 
 
 
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 78 89 2015  
MINIMUM TEMPERATURE (F) 52 49 2015  
2000  
 
 
SUNRISE AND SUNSET  
JULY 27 2017..........SUNRISE 608 AM PDT SUNSET 823 PM PDT  
JULY 28 2017..........SUNRISE 609 AM PDT SUNSET 822 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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