175
CDUS46 KMTR 220841
CLISJC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
141 AM PDT MON SEP 22 2025
...............................
..THE SAN JOSE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 21 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 79 1:23 PM 101 1928 80 -1 82
1939
MINIMUM 61 4:15 AM 39 1893 57 4 57
AVERAGE 70 68 2 70
PRECIPITATION (IN)
YESTERDAY 0.00 0.66 2013 0.00 0.00 0.00
MONTH TO DATE 0.41 0.03 0.38 0.00
SINCE OCT 1 9.72 13.44 -3.72 17.06
SINCE JAN 1 6.08 9.29 -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 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 5 4 1 5
MONTH TO DATE 136 97 39 136
SINCE SEP 1 136 97 39 136
SINCE JAN 1 485 540 -55 946
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION NW (330)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 5.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 5:00 AM
LOWEST 50 1:00 PM
AVERAGE 70
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THE SAN JOSE AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 101 1939
MINIMUM TEMPERATURE (F) 57 36 1895
SUNRISE AND SUNSET
SEPTEMBER 22 2025.....SUNRISE 6:56 AM PDT SUNSET 7:04 PM PDT
SEPTEMBER 23 2025.....SUNRISE 6:57 AM PDT SUNSET 7:02 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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