AFOS product CLIAPC
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CDUS46 KMTR 150832
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
1232 AM PST SUN DEC 15 2019


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR DECEMBER 14 2019...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2019


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         59    204 PM  63    2017  56      3       62       
  MINIMUM         43   1140 PM  24    2008  36      7       49       
  AVERAGE         51                        46      5       56      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        T                                         0.14    
  MONTH TO DATE    3.05                                      0.78    
  SINCE OCT 1      3.86                                      2.04    
  SINCE JAN 1     26.52                                     14.81    
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       14                                         9       
  MONTH TO DATE  158                                       222       
  SINCE DEC 1    158                                       222       
  SINCE JUL 1    758                                       789       
                                                                     
 COOLING                                                             
  YESTERDAY        0                                         0       
  MONTH TO DATE    0                                         0       
  SINCE DEC 1      0                                         0       
  SINCE JAN 1    346                                       182       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   9   RESULTANT WIND DIRECTION   W (270)      
  HIGHEST WIND SPEED    22   HIGHEST WIND DIRECTION     W (260)      
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION     W (270)      
  AVERAGE WIND SPEED    10.2                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.2                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  LIGHT RAIN                                                         

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST   100           500 AM                                     
 LOWEST     55           200 PM                                     
 AVERAGE    78                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   55        64      1998                    
 MINIMUM TEMPERATURE (F)   36        26      2005                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 15 2019......SUNRISE   718 AM PST   SUNSET   450 PM PST   
DECEMBER 16 2019......SUNRISE   719 AM PST   SUNSET   450 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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