AFOS product CLIAPC
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959 
CDUS46 KMTR 260828
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
1228 AM PST FRI JAN 26 2018


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR JANUARY 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         57   1233 PM  70    2014  56      1       55       
  MINIMUM         34    548 AM  27    2007  37     -3       33       
  AVERAGE         46                        47     -1       44      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.18                                      0.00    
  MONTH TO DATE    3.60                                     12.11    
  SINCE OCT 1      6.63                                     21.06    
  SINCE JAN 1      3.60                                     12.11    
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       19                                        21       
  MONTH TO DATE  383                                       407       
  SINCE DEC 1    931                                       952       
  SINCE JUL 1   1459                                      1456       
                                                                     
 COOLING                                                             
  YESTERDAY        0                                         0       
  MONTH TO DATE    0                                         0       
  SINCE DEC 1      0                                         0       
  SINCE JAN 1      0                                         0       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   2   RESULTANT WIND DIRECTION  SW (210)      
  HIGHEST WIND SPEED    20   HIGHEST WIND DIRECTION     W (290)      
  HIGHEST GUST SPEED    26   HIGHEST GUST DIRECTION     W (250)      
  AVERAGE WIND SPEED     4.8                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.6                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST   100           700 AM                                     
 LOWEST     66          1100 AM                                     
 AVERAGE    83                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   56        69      2014                    
 MINIMUM TEMPERATURE (F)   37        26      2009                    

                                                                     
SUNRISE AND SUNSET                                                   
JANUARY 26 2018.......SUNRISE   719 AM PST   SUNSET   525 PM PST   
JANUARY 27 2018.......SUNRISE   718 AM PST   SUNSET   526 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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