AFOS product CLISFO
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CDUS46 KMTR 110837
CLISFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
1237 AM PST SUN DEC 11 2016


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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR DECEMBER 10 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    145 PM  70    1958  57      4       61       
  MINIMUM         52   1159 PM  29    1972  45      7       51       
  AVERAGE         57                        51      6       56      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.64          1.48 1996   0.11   0.53     0.47    
  MONTH TO DATE    2.44                      1.13   1.31     0.68    
  SINCE OCT 1      6.76                      4.46   2.30     2.10    
  SINCE JAN 1     19.20                     17.75   1.45     5.75    
                                                                     
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        8                        14     -6        9       
  MONTH TO DATE  115                       134    -19      109       
  SINCE DEC 1    115                       134    -19      109       
  SINCE JUL 1    529                       698   -169      466       
                                                                     
 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   7   RESULTANT WIND DIRECTION  SW (230)      
  HIGHEST WIND SPEED    18   HIGHEST WIND DIRECTION     S (190)      
  HIGHEST GUST SPEED    22   HIGHEST GUST DIRECTION     S (200)      
  AVERAGE WIND SPEED     9.6                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.8                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    93           300 AM                                     
 LOWEST     77           900 PM                                     
 AVERAGE    85                                                       

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

                                                                     
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   57        74      1958                    
 MINIMUM TEMPERATURE (F)   45        26      1972                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 11 2016......SUNRISE   715 AM PST   SUNSET   451 PM PST   
DECEMBER 12 2016......SUNRISE   716 AM PST   SUNSET   452 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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