515
CDUS46 KMTR 120830
CLISJC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
130 AM PDT FRI SEP 12 2025
...............................
..THE SAN JOSE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 11 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 76 2:40 PM 100 1979 81 -5 78
MINIMUM 62 11:52 PM 44 1896 58 4 57
1906
1928
AVERAGE 69 70 -1 68
PRECIPITATION (IN)
YESTERDAY 0.00 0.47 1918 0.00 0.00 0.00
MONTH TO DATE 0.41 0.01 0.40 0.00
SINCE OCT 1 9.72 13.42 -3.70 17.06
SINCE JAN 1 6.08 9.27 -3.19 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 0 0 0
MONTH TO DATE 0 0 0 0
SINCE SEP 1 0 0 0 0
SINCE JUL 1 1 6 -5 0
COOLING
YESTERDAY 4 5 -1 3
MONTH TO DATE 65 55 10 91
SINCE SEP 1 65 55 10 91
SINCE JAN 1 414 498 -84 901
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION NW (330)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 6.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 81 8:00 PM
LOWEST 57 11:00 AM
AVERAGE 69
......................................................
THE SAN JOSE AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 81 101 1979
MINIMUM TEMPERATURE (F) 58 43 1894
SUNRISE AND SUNSET
SEPTEMBER 12 2025.....SUNRISE 6:48 AM PDT SUNSET 7:19 PM PDT
SEPTEMBER 13 2025.....SUNRISE 6:48 AM PDT SUNSET 7:18 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page