AFOS product CLISFO
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CDUS46 KMTR 210826
CLISFO

CLIMATE REPORT
NATIONAL WEATHER SERVICE IN SAN FRANCISCO                            
126 AM PDT FRI SEP 21 2007


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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 20 2007...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1927 TO 2007


 WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         68    235 PM  97    1939  73     -5       79       
  MINIMUM         52    441 AM  48    1965  55     -3       52       
                                      1954                          
                                      1947                          
  AVERAGE         60                        64     -4       66      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        T             0.08 2005   0.01  -0.01     0.00    
  MONTH TO DATE    T                         0.10  -0.10     0.00    
  SINCE JUL 1      0.01                      0.20  -0.19     0.00    
  SINCE JAN 1      6.30                     13.59  -7.29    15.26    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0                                               
  MONTH TO DATE    0.0                                               
  SINCE SEP 1      0.0                                               
  SINCE JUL 1      0.0                                               
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        5                         2      3        0       
  MONTH TO DATE   22                        40    -18       60       
  SINCE SEP 1     22                        40    -18       60       
  SINCE JUL 1    106                       173    -67      172       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         1     -1        1       
  MONTH TO DATE   28                        28      0        9       
  SINCE SEP 1     28                        28      0        9       
  SINCE JAN 1    113                       112      1      144       
..................................................................


 WIND (MPH)                                                           
  HIGHEST WIND SPEED    23   HIGHEST WIND DIRECTION     W (270)      
  HIGHEST GUST SPEED    26   HIGHEST GUST DIRECTION     W (280)      
  AVERAGE WIND SPEED     9.1                                         

                                                                      
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.4                                              

                                                                      
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  LIGHT RAIN                                                         

                                                                      
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    77          1200 AM                                     
 LOWEST     52           100 PM                                     
 AVERAGE    65                                                       

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

                                                                      
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   73        99      1928                    
 MINIMUM TEMPERATURE (F)   55        45      1955                    

                                                                      
SUNRISE AND SUNSET                                                   
SEPTEMBER 21 2007.....SUNRISE   656 AM PDT   SUNSET   708 PM PDT   
SEPTEMBER 22 2007.....SUNRISE   657 AM PDT   SUNSET   707 PM PDT   

                                                                     
-  INDICATES NEGATIVE NUMBERS.                                      
R  INDICATES RECORD WAS SET OR TIED.                                
MM INDICATES DATA IS MISSING.                                       
T  INDICATES TRACE AMOUNT.                                          

 


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