142
CDUS46 KMTR 210828
CLISJC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1228 AM PST SUN DEC 21 2025
...............................
..THE SAN JOSE AIRPORT CLIMATE SUMMARY FOR DECEMBER 20 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 66 2:00 PM 75 1999 59 7 59
MINIMUM 60 8:38 AM 26 1908 41 19 41
AVERAGE 63 50 13 50
PRECIPITATION (IN)
YESTERDAY T 0.74 2023 0.07 -0.07 0.00
MONTH TO DATE 0.01 1.44 -1.43 1.48
SINCE OCT 1 4.09 3.30 0.79 2.80
SINCE JAN 1 10.20 12.63 -2.43 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 2 15 -13 15
MONTH TO DATE 259 284 -25 194
SINCE DEC 1 259 284 -25 194
SINCE JUL 1 519 649 -130 420
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 6 RESULTANT WIND DIRECTION SE (150)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION SE (140)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION SE (140)
AVERAGE WIND SPEED 7.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 84 6:00 PM
LOWEST 73 1:00 PM
AVERAGE 79
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THE SAN JOSE AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 59 72 1999
MINIMUM TEMPERATURE (F) 41 25 1968
SUNRISE AND SUNSET
DECEMBER 21 2025......SUNRISE 7:18 AM PST SUNSET 4:54 PM PST
DECEMBER 22 2025......SUNRISE 7:19 AM PST SUNSET 4:54 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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