AFOS product CLISFO
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CDUS46 KMTR 160831
CLISFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
1231 AM PST FRI DEC 16 2016


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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR DECEMBER 15 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         61    650 PM  71    1980  56      5       56       
  MINIMUM        -25R   727 AM  31    1967  45    -70       41       
  AVERAGE         18                        50    -32       49      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        1.49R         1.41 1957   0.13   1.36     0.00    
  MONTH TO DATE    3.98                      1.75   2.23     1.56    
  SINCE OCT 1      8.30                      5.08   3.22     2.98    
  SINCE JAN 1     20.74                     18.37   2.37     6.63    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0           0.0                                 
  MONTH TO DATE    0.0                                               
  SINCE DEC 1      0.0                                               
  SINCE JUL 1      0.0                                               
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       47                        15     32       16       
  MONTH TO DATE  209                       205      4      179       
  SINCE DEC 1    209                       205      4      179       
  SINCE JUL 1    623                       769   -146      536       
                                                                     
 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  16   RESULTANT WIND DIRECTION   S (180)      
  HIGHEST WIND SPEED    37   HIGHEST WIND DIRECTION     S (170)      
  HIGHEST GUST SPEED    47   HIGHEST GUST DIRECTION     S (180)      
  AVERAGE WIND SPEED    17.7                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 1.0                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  RAIN                                                               
  LIGHT RAIN                                                         
  FOG                                                                
  HAZE                                                               
  BLOWING SNOW                                                       

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    93           300 AM                                     
 LOWEST     80          1200 AM                                     
 AVERAGE    87                                                       

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

                                                                     
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   56        70      1998                    
 MINIMUM TEMPERATURE (F)   44        33      1965                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 16 2016......SUNRISE   718 AM PST   SUNSET   453 PM PST   
DECEMBER 17 2016......SUNRISE   719 AM PST   SUNSET   453 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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