AFOS product CLISFO
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CDUS46 KMTR 140033
CLISFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
433 PM PST TUE DEC 13 2016


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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR DECEMBER 13 2016...
VALID TODAY AS OF 0400 PM LOCAL TIME.

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)                                                     
 TODAY                                                               
  MAXIMUM         55    359 PM  69    1958  57     -2       57       
  MINIMUM         50    606 AM  30    1972  45      5       48       
                                      1945                          
  AVERAGE         53                        51      2       53      
                                                                     
PRECIPITATION (IN)                                                   
  TODAY            0.00          2.47 2002   0.12  -0.12     0.76    
  MONTH TO DATE    2.44                      1.49   0.95     1.56    
  SINCE OCT 1      6.76                      4.82   1.94     2.98    
  SINCE JAN 1     19.20                     18.11   1.09     6.63    
                                                                     
SNOWFALL (IN)                                                        
  TODAY            0.0           0.0                                 
  MONTH TO DATE    0.0                                               
  SINCE DEC 1      0.0                                               
  SINCE JUL 1      0.0                                               
  SNOW DEPTH      MM                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  TODAY           12                        14     -2       12       
  MONTH TO DATE  154                       176    -22      148       
  SINCE DEC 1    154                       176    -22      148       
  SINCE JUL 1    568                       740   -172      505       
                                                                     
 COOLING                                                             
  TODAY            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   2   RESULTANT WIND DIRECTION  NE (40)       
  HIGHEST WIND SPEED    12   HIGHEST WIND DIRECTION    NE (30)       
  HIGHEST GUST SPEED    13   HIGHEST GUST DIRECTION     N (20)       
  AVERAGE WIND SPEED     3.9                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.8                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED TODAY.                            
  NO SIGNIFICANT WEATHER WAS OBSERVED.                               

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    86           200 AM                                     
 LOWEST     71           400 AM                                     
 AVERAGE    79                                                       

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

                                                                     
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   57        69      1958                    
 MINIMUM TEMPERATURE (F)   45        30      1972                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 13 2016......SUNRISE   716 AM PST   SUNSET   452 PM PST   
DECEMBER 14 2016......SUNRISE   717 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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