Climatological Report (Daily)
Issued by NWS
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112
CDUS46 KMTR 180833
CLISJC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
133 AM PDT FRI SEP 18 2026
...................................
...THE SAN JOSE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 17 2026...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1893 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 75 3:10 PM 102 1913 81 -6 89
MINIMUM 61 11:59 PM 40 1895 57 4 62
AVERAGE 68 69 -1 76
PRECIPITATION (IN)
YESTERDAY 0.00 0.34 1986 0.00 0.00 0.00
MONTH TO DATE 0.06 0.02 0.04 0.41
SINCE OCT 1 12.79 13.43 -0.64 9.72
SINCE JAN 1 7.43 9.28 -1.85 6.08
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 2 6 -4 1
COOLING
YESTERDAY 3 4 -1 11
MONTH TO DATE 93 81 12 108
SINCE SEP 1 93 81 12 108
SINCE JAN 1 617 524 93 457
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION N (350)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 5.7
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 81 9:00 PM
LOWEST 48 3:00 PM
AVERAGE 65
..........................................................
THE SAN JOSE AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 81 100 1913
MINIMUM TEMPERATURE (F) 57 42 1907
1908
1911
SUNRISE AND SUNSET
SEPTEMBER 18 2026.....SUNRISE 6:52 AM PDT SUNSET 7:10 PM PDT
SEPTEMBER 19 2026.....SUNRISE 6:53 AM PDT SUNSET 7:09 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$