Weather Service Report


505 
CDUS46 KMTR 010026
CLISFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
425 PM PST SAT JAN 31 2015


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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR JANUARY 31 2015...
VALID TODAY AS OF 0400 PM LOCAL TIME.

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)                                                     
 TODAY                                                               
  MAXIMUM         74R   226 PM  69    1976  58     16       60       
  MINIMUM         48    357 AM  32    1951  45      3       47       
                                      1950                          
                                      1946                          
  AVERAGE         61                        51     10       54      
                                                                     
PRECIPITATION (IN)                                                   
  TODAY            0.00          1.99 1963   0.14  -0.14     0.00    
  MONTH TO DATE    0.00                      4.19  -4.19     0.01    
  SINCE JUL 1     13.38                     11.76   1.62     1.50    
  SINCE JAN 1      0.00                      4.19  -4.19     0.01    
                                                                     
SNOWFALL (IN)                                                        
  TODAY            0.0           0.0                                 
  MONTH TO DATE    0.0                                               
  SINCE DEC 1      0.0                                               
  SINCE JUL 1      0.0                                               
  SNOW DEPTH      MM                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  TODAY            4                        14    -10       11       
  MONTH TO DATE  338                       455   -117      299       
  SINCE DEC 1    585                       903   -318      766       
  SINCE JUL 1    773                      1467   -694     1267       
                                                                     
 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  NW (330)      
  HIGHEST WIND SPEED    13   HIGHEST WIND DIRECTION     W (290)      
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION    NW (330)      
  AVERAGE WIND SPEED     2.2                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.1                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST   100           200 AM                                     
 LOWEST     20          1200 PM                                     
 AVERAGE    60                                                       

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

                                                                     
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   58        70      1976                    
 MINIMUM TEMPERATURE (F)   45        30      1950                    

                                                                     
SUNRISE AND SUNSET                                                   
JANUARY 31 2015.......SUNRISE   714 AM PST   SUNSET   532 PM PST   
FEBRUARY  1 2015......SUNRISE   713 AM PST   SUNSET   533 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