AFOS product CLISFO
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943 
CDUS46 KMTR 300828
CLISFO

CLIMATE REPORT 
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
128 AM PDT WED JUL 30 2025

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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR JULY 29 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         71   1:12 PM  91    1977  73     -2       66        
  MINIMUM         58   5:40 AM  44    1951  56      2       55        
  AVERAGE         65                        64      1       61     

PRECIPITATION (IN)                                                    
  YESTERDAY        0.00          T    1993   0.00   0.00     0.00     
                                      1994                           
                                      1995                           
  MONTH TO DATE    T                         0.00   0.00     0.00     
  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        4        
  MONTH TO DATE   68                        58     10       45        
  SINCE JUN 1    211                       155     56      158        
  SINCE JUL 1     68                        58     10       45        

 COOLING                                                              
  YESTERDAY        0                         1     -1        0        
  MONTH TO DATE    0                        29    -29       43        
  SINCE JUN 1      1                        52    -51       49        
  SINCE JAN 1      7                        72    -65       60        
...................................................................


WIND (MPH)                                                            
  RESULTANT WIND SPEED  13   RESULTANT WIND DIRECTION   W (280)       
  HIGHEST WIND SPEED    29   HIGHEST WIND DIRECTION     W (260)       
  HIGHEST GUST SPEED    36   HIGHEST GUST DIRECTION     W (270)       
  AVERAGE WIND SPEED    13.7                                        


SKY COVER                                                             
  POSSIBLE SUNSHINE  MM                                                 
  AVERAGE SKY COVER 0.4                                                 


WEATHER CONDITIONS                                                    
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                         
  FOG                                                                 
  HAZE                                                                


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    90           5:00 AM                                      
 LOWEST     59           1:00 PM                                      
 AVERAGE    75                                                        

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


THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   73        97      1977                      
 MINIMUM TEMPERATURE (F)   56        45      1954                      


SUNRISE AND SUNSET                                                    
JULY 30 2025..........SUNRISE   6:12 AM PDT   SUNSET   8:19 PM PDT     
JULY 31 2025..........SUNRISE   6:13 AM PDT   SUNSET   8:18 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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