Weather Service Report


774 
CDUS46 KMTR 180026
CLISFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
426 PM PST TUE JAN 17 2017


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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR JANUARY 17 2017...
VALID TODAY AS OF 0400 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1927 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 TODAY                                                               
  MAXIMUM         52    355 PM  70    1991  56     -4       60       
  MINIMUM         41    625 AM  32    1947  44     -3       54       
                                      1888                          
  AVERAGE         47                        50     -3       57      
                                                                     
PRECIPITATION (IN)                                                   
  TODAY            0.00          1.06 1973   0.14  -0.14     0.67    
  MONTH TO DATE    5.91                      2.38   3.53     3.60    
  SINCE OCT 1     14.86                      9.74   5.12     8.39    
  SINCE JAN 1      5.91                      2.38   3.53     3.60    
                                                                     
SNOWFALL (IN)                                                        
  TODAY            0.0           0.0                                 
  MONTH TO DATE    0.0                                               
  SINCE DEC 1      0.0                                               
  SINCE JUL 1      0.0                                               
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  TODAY           18                        15      3        8       
  MONTH TO DATE  240                       255    -15      228       
  SINCE DEC 1    677                       701    -24      671       
  SINCE JUL 1   1091                      1265   -174     1028       
                                                                     
 COOLING                                                             
  TODAY            0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE DEC 1      0                         0      0        0       
  SINCE JAN 1      0                         0      0        0       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   1   RESULTANT WIND DIRECTION   E (70)       
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION     E (110)      
  HIGHEST GUST SPEED    17   HIGHEST GUST DIRECTION     E (100)      
  AVERAGE WIND SPEED     3.1                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.4                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED TODAY.                            
  FOG                                                                
  HAZE                                                               

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    89           500 AM                                     
 LOWEST     71          1200 PM                                     
 AVERAGE    80                                                       

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

                                                                     
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   56        68      1948                    
 MINIMUM TEMPERATURE (F)   44        30      1947                    

                                                                     
SUNRISE AND SUNSET                                                   
JANUARY 17 2017.......SUNRISE   722 AM PST   SUNSET   517 PM PST   
JANUARY 18 2017.......SUNRISE   722 AM PST   SUNSET   519 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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Western Regional Climate Center, wrcc@dri.edu