AFOS product CLISFO
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963 
CDUS46 KMTR 150828
CLISFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
1228 AM PST MON DEC 15 2014


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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR DECEMBER 14 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1927 TO 2014


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         61    224 PM  69    1958  57      4       61       
  MINIMUM         49   1250 AM  30    1972  45      4       39       
  AVERAGE         55                        51      4       50      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.14          0.88 2002   0.13   0.01     0.00    
  MONTH TO DATE    7.76                      1.62   6.14     0.35    
  SINCE JUL 1     10.48                      5.16   5.32     1.49    
  SINCE JAN 1     17.79                     18.24  -0.45     3.38    
                                                                     
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       10                        14     -4       15       
  MONTH TO DATE   74                       190   -116      249       
  SINCE DEC 1     74                       190   -116      249       
  SINCE JUL 1    262                       754   -492      750       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE DEC 1      0                         0      0        0       
  SINCE JAN 1    497                       164    333      164       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   5   RESULTANT WIND DIRECTION   E (100)      
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION     E (100)      
  HIGHEST GUST SPEED    18   HIGHEST GUST DIRECTION    NE (50)       
  AVERAGE WIND SPEED     6.2                                         

                                                                     
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           500 AM                                     
 LOWEST     72           300 PM                                     
 AVERAGE    83                                                       

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

                                                                     
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   56        71      1980                    
 MINIMUM TEMPERATURE (F)   45        31      1967                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 15 2014......SUNRISE   717 AM PST   SUNSET   452 PM PST   
DECEMBER 16 2014......SUNRISE   718 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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