388
CDUS46 KMTR 190037
CLISJC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
437 PM PST THU DEC 18 2025
...............................
..THE SAN JOSE AIRPORT CLIMATE SUMMARY FOR DECEMBER 18 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 62 2:51 PM 69 1937 59 3 60
1958
MINIMUM 46 5:04 AM 25 1908 41 5 46
1924
AVERAGE 54 50 4 53
PRECIPITATION (IN)
TODAY 0.00 1.08 1955 0.07 -0.07 0.00
MONTH TO DATE 0.01 1.30 -1.29 1.48
SINCE OCT 1 4.09 3.16 0.93 2.80
SINCE JAN 1 10.20 12.49 -2.29 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 11 15 -4 12
MONTH TO DATE 252 254 -2 165
SINCE DEC 1 252 254 -2 165
SINCE JUL 1 512 619 -107 391
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 1 RESULTANT WIND DIRECTION NW (310)
HIGHEST WIND SPEED 8 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION NW (330)
AVERAGE WIND SPEED 1.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 2:00 AM
LOWEST 64 3:00 PM
AVERAGE 81
......................................................
THE SAN JOSE AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 59 70 1950
1999
MINIMUM TEMPERATURE (F) 41 23 1924
SUNRISE AND SUNSET
DECEMBER 18 2025......SUNRISE 7:17 AM PST SUNSET 4:52 PM PST
DECEMBER 19 2025......SUNRISE 7:17 AM PST SUNSET 4:53 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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