Weather Service Report


688 
CDUS46 KMTR 210834
CLISFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
1234 AM PST TUE FEB 21 2017


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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR FEBRUARY 20 2017...

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)                                                     
 YESTERDAY                                                           
  MAXIMUM         60   1134 PM  71    1991  60      0       60       
  MINIMUM         54    344 AM  37    2011  47      7       45       
                                      1976                          
  AVERAGE         57                        54      3       53      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        2.16R         1.06 1980   0.15   2.01     0.00    
  MONTH TO DATE    7.05                      2.94   4.11     0.85    
  SINCE OCT 1     25.33                     14.49  10.84    11.22    
  SINCE JAN 1     16.38                      7.13   9.25     6.43    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0           0.0                                 
  MONTH TO DATE    0.0                                               
  SINCE DEC 1      0.0                                               
  SINCE JUL 1      0.0                                               
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        8                        12     -4       12       
  MONTH TO DATE  166                       250    -84      166       
  SINCE DEC 1   1042                      1153   -111      982       
  SINCE JUL 1   1456                      1717   -261     1339       
                                                                     
 COOLING                                                             
  YESTERDAY        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  13   RESULTANT WIND DIRECTION   S (160)      
  HIGHEST WIND SPEED    40   HIGHEST WIND DIRECTION     S (200)      
  HIGHEST GUST SPEED    51   HIGHEST GUST DIRECTION     S (200)      
  AVERAGE WIND SPEED    16.2                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.9                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  HEAVY RAIN                                                         
  RAIN                                                               
  LIGHT RAIN                                                         
  FOG                                                                
  HAZE                                                               

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    93           300 AM                                     
 LOWEST     72          1000 PM                                     
 AVERAGE    83                                                       

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

                                                                     
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   60        72      1995                    
 MINIMUM TEMPERATURE (F)   47        34      1955                    
                                             1953                    

                                                                     
SUNRISE AND SUNSET                                                   
FEBRUARY 21 2017......SUNRISE   651 AM PST   SUNSET   556 PM PST   
FEBRUARY 22 2017......SUNRISE   650 AM PST   SUNSET   557 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