AFOS product CLISFO
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CDUS46 KMTR 050828
CLISFO

CLIMATE REPORT 
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
128 AM PDT TUE AUG 05 2025

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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR AUGUST 4 2025...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1927 TO 2025


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST      
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL           
...................................................................
TEMPERATURE (F)                                                          
 YESTERDAY                                                           
  MAXIMUM         73   2:09 PM  87    1998  73      0       64        
  MINIMUM         57   3:01 AM  50    1945  56      1       54        
                                      1949                           
                                      1966                           
  AVERAGE         65                        64      1       59     

PRECIPITATION (IN)                                                    
  YESTERDAY        0.00          T    2015   0.00   0.00      T       
                                      2017                           
                                      2024                           
  MONTH TO DATE    0.00                      0.00   0.00      T       
  SINCE OCT 1     16.11                     19.53  -3.42    20.13     
  SINCE JAN 1      7.55                     12.56  -5.01    14.80     

SNOWFALL (IN)                                                              
  YESTERDAY       MM             0.0                                  
  MONTH TO DATE    T                                                  
  SINCE JUN 1      T                                                  
  SINCE JUL 1      T                                                  

DEGREE DAYS                                                           
 HEATING                                                              
  YESTERDAY        0                         2     -2        6        
  MONTH TO DATE    8                         8      0       17        
  SINCE JUN 1    220                       163     57      180        
  SINCE JUL 1     77                        66     11       67        

 COOLING                                                              
  YESTERDAY        0                         1     -1        0        
  MONTH TO DATE    0                         4     -4        0        
  SINCE JUN 1      2                        53    -51       49        
  SINCE JAN 1      8                        73    -65       60        
...................................................................


WIND (MPH)                                                            
  RESULTANT WIND SPEED  20   RESULTANT WIND DIRECTION   W (280)       
  HIGHEST WIND SPEED    37   HIGHEST WIND DIRECTION     W (270)       
  HIGHEST GUST SPEED    48   HIGHEST GUST DIRECTION     W (270)       
  AVERAGE WIND SPEED    19.9                                        


SKY COVER                                                             
  POSSIBLE SUNSHINE  MM                                                 
  AVERAGE SKY COVER 0.2                                                 


WEATHER CONDITIONS                                                    
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                         
  HAZE                                                                


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    80          12:00 AM                                      
 LOWEST     35           2:00 PM                                      
 AVERAGE    58                                                        

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


THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   73        89      1964                      
 MINIMUM TEMPERATURE (F)   56        49      1950                      


SUNRISE AND SUNSET                                                    
AUGUST  5 2025........SUNRISE   6:17 AM PDT   SUNSET   8:13 PM PDT     
AUGUST  6 2025........SUNRISE   6:18 AM PDT   SUNSET   8:12 PM PDT     


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




$$