097
CDUS46 KMTR 170834
CLISJC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1234 AM PST WED DEC 17 2025
...............................
..THE SAN JOSE AIRPORT CLIMATE SUMMARY FOR DECEMBER 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 65 3:34 PM 72 1998 59 6 58
MINIMUM 43 4:04 AM 27 1893 42 1 45
1965
AVERAGE 54 50 4 52
PRECIPITATION (IN)
YESTERDAY 0.00 1.05 2002 0.08 -0.08 0.09
MONTH TO DATE 0.00 1.16 -1.16 1.48
SINCE OCT 1 4.08 3.02 1.06 2.80
SINCE JAN 1 10.19 12.35 -2.16 16.43
SNOWFALL (IN)
YESTERDAY MM 0.0 1947
MONTH TO DATE T
SINCE DEC 1 T
SINCE JUL 1 T
DEGREE DAYS
HEATING
YESTERDAY 11 15 -4 13
MONTH TO DATE 237 224 13 142
SINCE DEC 1 237 224 13 142
SINCE JUL 1 497 589 -92 368
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 602 624 -22 1215
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION NW (310)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION NW (320)
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 3.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 8:00 AM
LOWEST 58 3:00 PM
AVERAGE 76
......................................................
THE SAN JOSE AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 59 72 1958
MINIMUM TEMPERATURE (F) 42 26 1965
SUNRISE AND SUNSET
DECEMBER 17 2025......SUNRISE 7:16 AM PST SUNSET 4:52 PM PST
DECEMBER 18 2025......SUNRISE 7:17 AM PST SUNSET 4:52 PM PST
- 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