Climatological Report (Daily)
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378
CDUS46 KMTR 180029
CLISJC

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
529 PM PDT FRI OCT 17 2025

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

...THE SAN JOSE AIRPORT CLIMATE SUMMARY FOR OCTOBER 17 2025...
VALID TODAY AS OF 0500 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         77   2:37 PM  95    2020  76      1       75
  MINIMUM         49   5:54 AM  31    1893  53     -4       54
  AVERAGE         63                        64     -1       65

PRECIPITATION (IN)
  TODAY            0.00          0.36 1914   0.01  -0.01     0.00
  MONTH TO DATE    1.97                      0.21   1.76     0.00
  SINCE OCT 1      1.97                      0.21   1.76     0.00
  SINCE JAN 1      8.08                      9.54  -1.46    13.63

SNOWFALL (IN)
  TODAY           MM             0.0  1947
  MONTH TO DATE    T
  SINCE SEP 1      T
  SINCE JUL 1      T

DEGREE DAYS
 HEATING
  TODAY            2                         2      0        0
  MONTH TO DATE   28                        25      3        0
  SINCE SEP 1     28                        37     -9        0
  SINCE JUL 1     29                        43    -14        0

 COOLING
  TODAY            0                         1     -1        0
  MONTH TO DATE   32                        39     -7      171
  SINCE SEP 1    242                       169     73      384
  SINCE JAN 1    591                       612    -21     1194
...................................................................


WIND (MPH)
  RESULTANT WIND SPEED   3   RESULTANT WIND DIRECTION  SE (120)
  HIGHEST WIND SPEED    10   HIGHEST WIND DIRECTION     N (340)
  HIGHEST GUST SPEED    15   HIGHEST GUST DIRECTION     N (350)
  AVERAGE WIND SPEED     4.5


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.1


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    97           6:00 AM
 LOWEST     38           2:00 PM
 AVERAGE    68

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


THE SAN JOSE AIRPORT CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   76        98      1903
 MINIMUM TEMPERATURE (F)   52        30      1893


SUNRISE AND SUNSET
OCTOBER 17 2025.......SUNRISE   7:18 AM PDT   SUNSET   6:27 PM PDT
OCTOBER 18 2025.......SUNRISE   7:19 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.




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