Climatological Report (Daily)
Issued by NWS
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CDUS46 KMTR 050031
CLISJC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
531 PM PDT SAT OCT 04 2025
...................................
...THE SAN JOSE AIRPORT CLIMATE SUMMARY FOR OCTOBER 4 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 MM 98 2024 78 -1 98
MINIMUM 54 MM 41 1931 55 -1 65
AVERAGE 66 67 -1 82
PRECIPITATION (IN)
TODAY 0.00 0.41 1916 0.01 -0.01 0.00
MONTH TO DATE 0.45 0.04 0.41 0.00
SINCE OCT 1 0.45 0.04 0.41 0.00
SINCE JAN 1 6.56 9.37 -2.81 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 0 1 -1 0
MONTH TO DATE 0 4 -4 0
SINCE SEP 1 0 16 -16 0
SINCE JUL 1 1 22 -21 0
COOLING
TODAY 1 3 -2 17
MONTH TO DATE 11 12 -1 74
SINCE SEP 1 221 142 79 287
SINCE JAN 1 570 585 -15 1097
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION NW (310)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NW (320)
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM
AVERAGE WIND SPEED 5.1
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 90 4:00 AM
LOWEST 40 3:00 PM
AVERAGE 65
..........................................................
THE SAN JOSE AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 101 1987
MINIMUM TEMPERATURE (F) 55 38 1893
1911
SUNRISE AND SUNSET
OCTOBER 4 2025.......SUNRISE 7:06 AM PDT SUNSET 6:46 PM PDT
OCTOBER 5 2025.......SUNRISE 7:07 AM PDT SUNSET 6:44 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$