AFOS product CLISFO
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CDUS46 KMTR 180836
CLISFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
135 AM PDT MON MAY 18 2015


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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR MAY 17 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1927 TO 2015


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         62   1225 PM  93    2009  68     -6       67       
                                      1997                          
  MINIMUM         55   1146 PM  45    1996  52      3       57       
  AVERAGE         59                        60     -1       62      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          0.24 1994   0.01  -0.01     0.00    
  MONTH TO DATE    0.00                      0.31  -0.31      T      
  SINCE OCT 1     16.31                     20.17  -3.86     8.57    
  SINCE JAN 1      3.35                     12.81  -9.46     7.31    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0           0.0                                 
  MONTH TO DATE    0.0                                               
  SINCE MAR 1      0.0                                               
  SINCE JUL 1      0.0                                               
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        6                         6      0        3       
  MONTH TO DATE  106                       108     -2       44       
  SINCE MAR 1    437                       670   -233      379       
  SINCE JUL 1   1384                      2476  -1092     1924       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0       41       
  SINCE MAR 1     13                         6      7       62       
  SINCE JAN 1     13                         6      7       62       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED  12   RESULTANT WIND DIRECTION   W (260)      
  HIGHEST WIND SPEED    20   HIGHEST WIND DIRECTION     W (260)      
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION    NW (300)      
  AVERAGE WIND SPEED    12.1                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.9                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    77          1200 AM                                     
 LOWEST     60          1200 PM                                     
 AVERAGE    69                                                       

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

                                                                     
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   68        85      1978                    
 MINIMUM TEMPERATURE (F)   52        42      1974                    
                                             1950                    

                                                                     
SUNRISE AND SUNSET                                                   
MAY 18 2015...........SUNRISE   558 AM PDT   SUNSET   815 PM PDT   
MAY 19 2015...........SUNRISE   557 AM PDT   SUNSET   815 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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