877
CDUS46 KMTR 010838
CLISJC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
138 AM PDT WED OCT 01 2025
...............................
..THE SAN JOSE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 30 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 3:04 PM 95 2001 79 -2 95
2024
MINIMUM 62 6:25 AM 35 1893 56 6 56
AVERAGE 70 67 3 76
PRECIPITATION (IN)
YESTERDAY T 0.69 1894 0.01 -0.01 0.00
MONTH TO DATE 0.44 0.07 0.37 0.00
SINCE OCT 1 9.75 13.48 -3.73 17.06
SINCE JAN 1 6.11 9.33 -3.22 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 8 -8 0
SINCE SEP 1 0 8 -8 0
SINCE JUL 1 1 14 -13 0
COOLING
YESTERDAY 5 3 2 11
MONTH TO DATE 210 130 80 213
SINCE SEP 1 210 130 80 213
SINCE JAN 1 559 573 -14 1023
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION S (180)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 9.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 84 5:00 AM
LOWEST 48 4:00 PM
AVERAGE 66
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THE SAN JOSE AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 79 100 2024
MINIMUM TEMPERATURE (F) 56 39 1894
SUNRISE AND SUNSET
OCTOBER 1 2025.......SUNRISE 7:04 AM PDT SUNSET 6:50 PM PDT
OCTOBER 2 2025.......SUNRISE 7:04 AM PDT SUNSET 6:49 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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