AFOS product CLISFO
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CDUS46 KMTR 180833
CLISFO

CLIMATE REPORT 
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
133 AM PDT SAT OCT 18 2025

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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR OCTOBER 17 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         75   3:11 PM  91    2020  72      3       66        
  MINIMUM         52   6:10 AM  42    1971  53     -1       55        
  AVERAGE         64                        63      1       61     

PRECIPITATION (IN)                                                    
  YESTERDAY        0.00          0.18 2004   0.03  -0.03     0.00     
  MONTH TO DATE    1.00                      0.30   0.70      T       
  SINCE OCT 1      1.00                      0.30   0.70      T       
  SINCE JAN 1      8.62                     12.97  -4.35    14.90     

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

DEGREE DAYS                                                           
 HEATING                                                              
  YESTERDAY        1                         3     -2        4        
  MONTH TO DATE   30                        40    -10       29        
  SINCE SEP 1     33                        86    -53      103        
  SINCE JUL 1    123                       188    -65      233        

 COOLING                                                              
  YESTERDAY        0                         1     -1        0        
  MONTH TO DATE   14                        25    -11       84        
  SINCE SEP 1     92                        81     11      108        
  SINCE JAN 1    142                       191    -49      182        
...................................................................


WIND (MPH)                                                            
  RESULTANT WIND SPEED   4   RESULTANT WIND DIRECTION   W (290)       
  HIGHEST WIND SPEED    16   HIGHEST WIND DIRECTION    NW (300)       
  HIGHEST GUST SPEED    20   HIGHEST GUST DIRECTION     W (290)       
  AVERAGE WIND SPEED     5.7                                        


SKY COVER                                                             
  POSSIBLE SUNSHINE  MM                                                 
  AVERAGE SKY COVER 0.1                                                 


WEATHER CONDITIONS                                                    
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                         
  FOG                                                                 
  HAZE                                                                


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           1:00 AM                                      
 LOWEST     49           2:00 PM                                      
 AVERAGE    71                                                        

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


THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   72        86      2012                      
                                             2023                     
 MINIMUM TEMPERATURE (F)   53        42      1946                      


SUNRISE AND SUNSET                                                    
OCTOBER 18 2025.......SUNRISE   7:21 AM PDT   SUNSET   6:28 PM PDT     
OCTOBER 19 2025.......SUNRISE   7:22 AM PDT   SUNSET   6:26 PM PDT     


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




$$