CDUS46 KMTR 110040

CLIAPC



CLIMATE REPORT 

NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA

440 PM PST WED DEC 10 2025



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



...THE NAPA AIRPORT  CLIMATE SUMMARY FOR DECEMBER 10 2025...

VALID TODAY AS OF 0400 PM LOCAL TIME.



CLIMATE NORMAL PERIOD: 1991 TO 2020

CLIMATE RECORD PERIOD: 1998 TO 2025





WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST      

                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     

                                                  NORMAL           

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

TEMPERATURE (F)                                                          

 TODAY                                                               

  MAXIMUM         49   3:03 PM  66    2017  58     -9       55        

  MINIMUM         43   9:25 AM  21    2013  38      5       42        

  AVERAGE         46                        48     -2       49     



PRECIPITATION (IN)                                                    

  TODAY            0.00                                      0.00     

  MONTH TO DATE    T                                         0.00     

  SINCE OCT 1      3.46                                      4.26     

  SINCE JAN 1     11.78                                     18.10     



DEGREE DAYS                                                           

 HEATING                                                              

  TODAY           19                                        16        

  MONTH TO DATE  192                                       134        

  SINCE DEC 1    192                                       134        

  SINCE JUL 1    667                                       674        



 COOLING                                                              

  TODAY            0                                         0        

  MONTH TO DATE    0                                         0        

  SINCE DEC 1      0                                         0        

  SINCE JAN 1    211                                       444        

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





WIND (MPH)                                                            

  RESULTANT WIND SPEED  12   RESULTANT WIND DIRECTION   E (80)        

  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION     E (100)       

  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION     E (90)        

  AVERAGE WIND SPEED    12.0                                        





SKY COVER                                                             

  POSSIBLE SUNSHINE  MM                                                 

  AVERAGE SKY COVER 0.9                                                 





WEATHER CONDITIONS                                                    

THE FOLLOWING WEATHER WAS RECORDED TODAY.                             

  FOG                                                                 





RELATIVE HUMIDITY (PERCENT)

 HIGHEST    97           5:00 AM                                      

 LOWEST     86           1:00 PM                                      

 AVERAGE    92                                                        



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





THE NAPA AIRPORT  CLIMATE NORMALS FOR TOMORROW

                         NORMAL    RECORD    YEAR                     

 MAXIMUM TEMPERATURE (F)   58        66      2017                      

 MINIMUM TEMPERATURE (F)   38        25      2013                      





SUNRISE AND SUNSET                                                    

DECEMBER 10 2025......SUNRISE   7:15 AM PST   SUNSET   4:49 PM PST     

DECEMBER 11 2025......SUNRISE   7:16 AM PST   SUNSET   4:49 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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