AFOS product CLIAPC
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820 
CDUS46 KMTR 260837
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
137 AM PDT SAT MAY 26 2018


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR MAY 25 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2018


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         67    235 PM  83    2014  74     -7       67       
  MINIMUM         54    947 PM  42    2010  47      7       55       
                                      2001                          
  AVERAGE         61                        60      1       61      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.01                                       T      
  MONTH TO DATE    0.01                                       T      
  SINCE OCT 1     15.80                                     36.85    
  SINCE JAN 1     12.77                                     27.90    
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        4                                         4       
  MONTH TO DATE  118                                        86       
  SINCE MAR 1    820                                       565       
  SINCE JUL 1   2840                                      2448       
                                                                     
 COOLING                                                             
  YESTERDAY        0                                         0       
  MONTH TO DATE    2                                        30       
  SINCE MAR 1      2                                        32       
  SINCE JAN 1      2                                        32       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   9   RESULTANT WIND DIRECTION  SW (240)      
  HIGHEST WIND SPEED    16   HIGHEST WIND DIRECTION    SW (210)      
  HIGHEST GUST SPEED    19   HIGHEST GUST DIRECTION     S (200)      
  AVERAGE WIND SPEED    10.5                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.9                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  LIGHT RAIN                                                         
  FOG                                                                

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    93           600 AM                                     
 LOWEST     52           200 PM                                     
 AVERAGE    73                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   75        84      2014                    
 MINIMUM TEMPERATURE (F)   47        40      2011                    
                                             1998                    

                                                                     
SUNRISE AND SUNSET                                                   
MAY 26 2018...........SUNRISE   550 AM PDT   SUNSET   822 PM PDT   
MAY 27 2018...........SUNRISE   550 AM PDT   SUNSET   823 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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