CDUS46 KMTR 180937
CLIAPC

CLIMATE REPORT 
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
237 AM PDT MON MAY 18 2026

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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR MAY 17 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2026


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST      
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL           
...................................................................
TEMPERATURE (F)                                                          
 YESTERDAY                                                           
  MAXIMUM         76   5:05 PM  95    2009  73      3       71        
  MINIMUM         45   6:37 AM  41    1999  48     -3       49        
                                      2018                           
  AVERAGE         61                        61      0       60     

PRECIPITATION (IN)                                                    
  YESTERDAY        0.00                                      0.00     
  MONTH TO DATE    0.37                                      0.20     
  SINCE OCT 1     16.76                                     16.08     
  SINCE JAN 1      9.33                                      8.10     

DEGREE DAYS                                                           
 HEATING                                                              
  YESTERDAY        4                                         5        
  MONTH TO DATE   72                                        88        
  SINCE MAR 1    479                                       754        
  SINCE JUL 1   2277                                      2609        

 COOLING                                                              
  YESTERDAY        0                                         0        
  MONTH TO DATE    2                                         6        
  SINCE MAR 1     10                                         8        
  SINCE JAN 1     10                                         8        
...................................................................


WIND (MPH)                                                            
  RESULTANT WIND SPEED   6   RESULTANT WIND DIRECTION   N (350)       
  HIGHEST WIND SPEED    31   HIGHEST WIND DIRECTION     N (20)        
  HIGHEST GUST SPEED    45   HIGHEST GUST DIRECTION     N (360)       
  AVERAGE WIND SPEED    10.1                                        


SKY COVER                                                             
  POSSIBLE SUNSHINE  MM                                                 
  AVERAGE SKY COVER 0.0                                                 


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    86           6:00 AM                                      
 LOWEST     14           6:00 PM                                      
 AVERAGE    50                                                        

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


THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   73        91      2022                      
 MINIMUM TEMPERATURE (F)   48        39      2013                      


SUNRISE AND SUNSET                                                    
MAY 18 2026...........SUNRISE   5:56 AM PDT   SUNSET   8:16 PM PDT     
MAY 19 2026...........SUNRISE   5:55 AM PDT   SUNSET   8:17 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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