CDUS46 KMTR 130037

CLISJC



CLIMATE REPORT 

NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA

437 PM PST FRI DEC 12 2025



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



...THE SAN JOSE AIRPORT CLIMATE SUMMARY FOR DECEMBER 12 2025...

VALID TODAY AS OF 0400 PM LOCAL TIME.



CLIMATE NORMAL PERIOD: 1991 TO 2020

CLIMATE RECORD PERIOD: 1893 TO 2025





WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST      

                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     

                                                  NORMAL           

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

TEMPERATURE (F)                                                          

 TODAY                                                               

  MAXIMUM         58   3:55 PM  79    1958  59     -1       60        

  MINIMUM         38   3:48 AM  20    1932  42     -4       50        

  AVERAGE         48                        51     -3       55     



PRECIPITATION (IN)                                                    

  TODAY            0.00          1.84 1995   0.08  -0.08     0.49     

  MONTH TO DATE    0.00                      0.86  -0.86     0.49     

  SINCE OCT 1      4.08                      2.72   1.36     1.81     

  SINCE JAN 1     10.19                     12.05  -1.86    15.44     



SNOWFALL (IN)                                                              

  TODAY           MM             0.0  1947                            

  MONTH TO DATE    T                                                  

  SINCE DEC 1      T                                                  

  SINCE JUL 1      T                                                  



DEGREE DAYS                                                           

 HEATING                                                              

  TODAY           17                        14      3       10        

  MONTH TO DATE  174                       165      9       97        

  SINCE DEC 1    174                       165      9       97        

  SINCE JUL 1    434                       530    -96      323        



 COOLING                                                              

  TODAY            0                         0      0        0        

  MONTH TO DATE    0                         0      0        0        

  SINCE DEC 1      0                         0      0        0        

  SINCE JAN 1    602                       624    -22     1215        

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





WIND (MPH)                                                            

  RESULTANT WIND SPEED   1   RESULTANT WIND DIRECTION  NW (320)       

  HIGHEST WIND SPEED     6   HIGHEST WIND DIRECTION    NW (310)       

  HIGHEST GUST SPEED    10   HIGHEST GUST DIRECTION    NW (300)       

  AVERAGE WIND SPEED     1.2                                        





SKY COVER                                                             

  POSSIBLE SUNSHINE  MM                                                 

  AVERAGE SKY COVER 0.5                                                 





WEATHER CONDITIONS                                                    

THE FOLLOWING WEATHER WAS RECORDED TODAY.                             

  FOG                                                                 

  FOG W/VISIBILITY <= 1/4 MILE                                        

  HAZE                                                                





RELATIVE HUMIDITY (PERCENT)

 HIGHEST   100           5:00 AM                                      

 LOWEST     55           3:00 PM                                      

 AVERAGE    78                                                        



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





THE SAN JOSE AIRPORT CLIMATE NORMALS FOR TOMORROW

                         NORMAL    RECORD    YEAR                     

 MAXIMUM TEMPERATURE (F)   59        70      1911                      

                                             1953                     

                                             1958                     

 MINIMUM TEMPERATURE (F)   42        21      1932                      





SUNRISE AND SUNSET                                                    

DECEMBER 12 2025......SUNRISE   7:13 AM PST   SUNSET   4:50 PM PST     

DECEMBER 13 2025......SUNRISE   7:14 AM PST   SUNSET   4:51 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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