258
CDUS46 KMTR 300844
CLISJC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
144 AM PDT TUE SEP 30 2025
...............................
..THE SAN JOSE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 29 2025
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)
YESTERDAY
MAXIMUM 77 2:55 PM 96 1997 79 -2 80
MINIMUM 66 11:56 PM 42 1905 56 10 61
1907
AVERAGE 72 68 4 71
PRECIPITATION (IN)
YESTERDAY 0.00 0.66 1894 0.00 0.00 0.00
MONTH TO DATE 0.44 0.06 0.38 0.00
SINCE OCT 1 9.75 13.47 -3.72 17.06
SINCE JAN 1 6.11 9.32 -3.21 13.63
SNOWFALL (IN)
YESTERDAY MM 0.0 1947
MONTH TO DATE T
SINCE SEP 1 T
SINCE JUL 1 T
DEGREE DAYS
HEATING
YESTERDAY 0 1 -1 0
MONTH TO DATE 0 7 -7 0
SINCE SEP 1 0 7 -7 0
SINCE JUL 1 1 13 -12 0
COOLING
YESTERDAY 7 3 4 6
MONTH TO DATE 205 127 78 202
SINCE SEP 1 205 127 78 202
SINCE JAN 1 554 570 -16 1012
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION S (180)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 8.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 78 7:00 AM
LOWEST 45 3:00 PM
AVERAGE 62
......................................................
THE SAN JOSE AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 79 95 2001
2024
MINIMUM TEMPERATURE (F) 56 35 1893
SUNRISE AND SUNSET
SEPTEMBER 30 2025.....SUNRISE 7:03 AM PDT SUNSET 6:52 PM PDT
OCTOBER 1 2025.......SUNRISE 7:04 AM PDT SUNSET 6:50 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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