442
CDUS46 KMTR 220029
CLISJC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
529 PM PDT TUE OCT 21 2025
...............................
..THE SAN JOSE AIRPORT CLIMATE SUMMARY FOR OCTOBER 21 2025
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
MAXIMUM 81 1:22 PM 89 1901 75 6 77
1929
MINIMUM 53 6:12 AM 35 1912 52 1 53
AVERAGE 67 63 4 65
PRECIPITATION (IN)
TODAY 0.00 0.85 1899 0.02 -0.02 0.00
MONTH TO DATE 1.97 0.29 1.68 0.00
SINCE OCT 1 1.97 0.29 1.68 0.00
SINCE JAN 1 8.08 9.62 -1.54 13.63
SNOWFALL (IN)
TODAY MM 0.0 1947
MONTH TO DATE T
SINCE SEP 1 T
SINCE JUL 1 T
DEGREE DAYS
HEATING
TODAY 0 3 -3 0
MONTH TO DATE 28 35 -7 0
SINCE SEP 1 28 47 -19 0
SINCE JUL 1 29 53 -24 0
COOLING
TODAY 2 1 1 0
MONTH TO DATE 40 43 -3 183
SINCE SEP 1 250 173 77 396
SINCE JAN 1 599 616 -17 1206
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 0 RESULTANT WIND DIRECTION N (0)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 4.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 77 3:00 AM
LOWEST 33 12:00 PM
AVERAGE 55
......................................................
THE SAN JOSE AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 90 1901
1929
MINIMUM TEMPERATURE (F) 52 31 1906
SUNRISE AND SUNSET
OCTOBER 21 2025.......SUNRISE 7:22 AM PDT SUNSET 6:22 PM PDT
OCTOBER 22 2025.......SUNRISE 7:23 AM PDT SUNSET 6:21 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