999
CDUS46 KMTR 180028
CLISJC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
428 PM PST WED DEC 17 2025
...............................
..THE SAN JOSE AIRPORT CLIMATE SUMMARY FOR DECEMBER 17 2025
VALID TODAY AS OF 0400 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 71 2:41 PM 72 1958 59 12 61
MINIMUM 51 2:09 AM 26 1965 42 9 46
AVERAGE 61 50 11 54
PRECIPITATION (IN)
TODAY 0.01 0.75 1894 0.07 -0.06 0.00
1977
MONTH TO DATE 0.01 1.23 -1.22 1.48
SINCE OCT 1 4.09 3.09 1.00 2.80
SINCE JAN 1 10.20 12.42 -2.22 16.43
SNOWFALL (IN)
TODAY MM 0.0 1947
MONTH TO DATE T
SINCE DEC 1 T
SINCE JUL 1 T
DEGREE DAYS
HEATING
TODAY 4 15 -11 11
MONTH TO DATE 241 239 2 153
SINCE DEC 1 241 239 2 153
SINCE JUL 1 501 604 -103 379
COOLING
TODAY 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 3 RESULTANT WIND DIRECTION SE (150)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 5.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 5:00 AM
LOWEST 63 2:00 PM
AVERAGE 76
......................................................
THE SAN JOSE AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 59 69 1937
1958
MINIMUM TEMPERATURE (F) 41 25 1908
1924
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.
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