AFOS product CLISFO
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CDUS46 KMTR 250839
CLISFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
1239 AM PST SUN DEC 25 2016


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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR DECEMBER 24 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1927 TO 2016


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         52    344 PM  65    1967  56     -4       53       
  MINIMUM         43   1159 PM  29    1990  44     -1       45       
  AVERAGE         48                        50     -2       49      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.03          2.00 1983   0.15  -0.12     0.13    
  MONTH TO DATE    4.63                      3.04   1.59     3.24    
  SINCE OCT 1      8.95                      6.37   2.58     4.66    
  SINCE JAN 1     21.39                     19.66   1.73     8.31    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY       MM             0.0                                 
  MONTH TO DATE    0.0                                               
  SINCE DEC 1      0.0                                               
  SINCE JUL 1      0.0                                               
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       17                        15      2       16       
  MONTH TO DATE  318                       340    -22      301       
  SINCE DEC 1    318                       340    -22      301       
  SINCE JUL 1    732                       904   -172      658       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE DEC 1      0                         0      0        0       
  SINCE JAN 1    142                       164    -22      327       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED  11   RESULTANT WIND DIRECTION   W (290)      
  HIGHEST WIND SPEED    22   HIGHEST WIND DIRECTION     W (290)      
  HIGHEST GUST SPEED    26   HIGHEST GUST DIRECTION     W (290)      
  AVERAGE WIND SPEED    12.2                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.2                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  LIGHT RAIN                                                         

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    83           500 AM                                     
 LOWEST     54           200 PM                                     
 AVERAGE    69                                                       

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

                                                                     
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   56        68      1967                    
 MINIMUM TEMPERATURE (F)   44        31      1990                    
                                             1962                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 25 2016......SUNRISE   723 AM PST   SUNSET   457 PM PST   
DECEMBER 26 2016......SUNRISE   723 AM PST   SUNSET   458 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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