AFOS product CLIAPC
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CDUS46 KMTR 200845
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
145 AM PDT MON MAY 20 2013


................................... 

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR MAY 19 2013...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2013


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         85R   217 PM  84    2000  73     12       75       
  MINIMUM         45    508 AM  40    2011  46     -1       42       
                                      2003                          
  AVERAGE         65                        60      5       59      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00                                      0.00    
  MONTH TO DATE    0.05                                      0.01    
  SINCE JUL 1      9.54                                     17.28    
  SINCE JAN 1      1.75                                     13.70    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0                                               
  MONTH TO DATE    0.0                                               
  SINCE MAR 1      0.0                                               
  SINCE JUL 1      0.0                                               
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        0                                         6       
  MONTH TO DATE   50                                       100       
  SINCE MAR 1    589                                       783       
  SINCE JUL 1   2794                                      3047       
                                                                     
 COOLING                                                             
  YESTERDAY        0                                         0       
  MONTH TO DATE    9                                         6       
  SINCE MAR 1     12                                        13       
  SINCE JAN 1     12                                        13       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   4   RESULTANT WIND DIRECTION  SW (220)      
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION    SW (230)      
  HIGHEST GUST SPEED    22   HIGHEST GUST DIRECTION    SW (230)      
  AVERAGE WIND SPEED     5.5                                         

                                                                     
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    86           400 AM                                     
 LOWEST     22           200 PM                                     
 AVERAGE    54                                                       

..........................................................

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   73        89      2001                    
 MINIMUM TEMPERATURE (F)   46        39      2010                    

                                                                     
SUNRISE AND SUNSET                                                   
MAY 20 2013...........SUNRISE   554 AM PDT   SUNSET   818 PM PDT   
MAY 21 2013...........SUNRISE   553 AM PDT   SUNSET   819 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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