151
CDUS46 KMTR 190830
CLISJC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
130 AM PDT FRI SEP 19 2025
...............................
..THE SAN JOSE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 18 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 84 1:05 PM 100 1913 81 3 78
MINIMUM 64 11:59 PM 42 1907 57 7 62
1908
1911
AVERAGE 74 69 5 70
PRECIPITATION (IN)
YESTERDAY 0.00 2.00 1959 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 9 4 5 5
MONTH TO DATE 117 85 32 122
SINCE SEP 1 117 85 32 122
SINCE JAN 1 466 528 -62 932
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION NW (300)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 6.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 81 7:00 PM
LOWEST 40 1:00 PM
AVERAGE 61
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THE SAN JOSE AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 81 98 2000
MINIMUM TEMPERATURE (F) 57 39 1893
SUNRISE AND SUNSET
SEPTEMBER 19 2025.....SUNRISE 6:53 AM PDT SUNSET 7:09 PM PDT
SEPTEMBER 20 2025.....SUNRISE 6:54 AM PDT SUNSET 7:07 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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