Weather Service Report


106 
CDUS46 KMTR 210836
CLISFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
135 AM PDT TUE APR 21 2015


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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR APRIL 20 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         68    103 PM  91    2009  65      3       79       
  MINIMUM         53    349 AM  38    1967  49      4       51       
  AVERAGE         61                        57      4       65      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          0.69 2001   0.03  -0.03     0.00    
  MONTH TO DATE    0.87                      0.97  -0.10     1.20    
  SINCE OCT 1     15.90                     19.54  -3.64     8.16    
  SINCE JAN 1      2.94                     12.18  -9.24     6.90    
                                                                     
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        4                         8     -4        0       
  MONTH TO DATE  134                       173    -39      110       
  SINCE MAR 1    278                       487   -209      286       
  SINCE JUL 1   1225                      2293  -1068     1831       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    1                         0      1        6       
  SINCE MAR 1      7                         1      6        6       
  SINCE JAN 1      7                         1      6        6       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   9   RESULTANT WIND DIRECTION   W (270)      
  HIGHEST WIND SPEED    20   HIGHEST WIND DIRECTION     W (270)      
  HIGHEST GUST SPEED    24   HIGHEST GUST DIRECTION     W (290)      
  AVERAGE WIND SPEED     9.3                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.7                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST   100           700 AM                                     
 LOWEST     58           100 PM                                     
 AVERAGE    79                                                       

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

                                                                     
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   65        86      2009                    
 MINIMUM TEMPERATURE (F)   50        39      1968                    

                                                                     
SUNRISE AND SUNSET                                                   
APRIL 21 2015.........SUNRISE   627 AM PDT   SUNSET   750 PM PDT   
APRIL 22 2015.........SUNRISE   625 AM PDT   SUNSET   751 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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Western Regional Climate Center, wrcc@dri.edu