430
CDUS46 KMTR 170830
CLISJC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
130 AM PDT WED SEP 17 2025
...............................
..THE SAN JOSE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 16 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 87 12:31 PM 103 1913 81 6 75
MINIMUM 63 5:10 AM 43 1896 57 6 59
AVERAGE 75 69 6 67
PRECIPITATION (IN)
YESTERDAY 0.00 0.43 1989 0.00 0.00 0.00
MONTH TO DATE 0.41 0.02 0.39 0.00
SINCE OCT 1 9.72 13.43 -3.71 17.06
SINCE JAN 1 6.08 9.28 -3.20 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 10 4 6 2
MONTH TO DATE 97 77 20 116
SINCE SEP 1 97 77 20 116
SINCE JAN 1 446 520 -74 926
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION NW (310)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 5.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 81 11:00 PM
LOWEST 39 3:00 PM
AVERAGE 60
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THE SAN JOSE AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 81 102 1913
MINIMUM TEMPERATURE (F) 57 40 1895
SUNRISE AND SUNSET
SEPTEMBER 17 2025.....SUNRISE 6:52 AM PDT SUNSET 7:12 PM PDT
SEPTEMBER 18 2025.....SUNRISE 6:53 AM PDT SUNSET 7:10 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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