824
CDUS46 KMTR 170042
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
442 PM PST TUE DEC 16 2025
...............................
..THE NAPA AIRPORT CLIMATE SUMMARY FOR DECEMBER 16 2025
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 55 1:09 PM 70 2023 57 -2 MM
MINIMUM 38 1:36 AM 28 2006 37 1 MM
2015
AVERAGE 47 47 0 MM
PRECIPITATION (IN)
TODAY 0.00 MM
MONTH TO DATE T 1.13
SINCE OCT 1 3.46 5.39
SINCE JAN 1 11.78 19.23
DEGREE DAYS
HEATING
TODAY 18 MM
MONTH TO DATE 314 177
SINCE DEC 1 314 177
SINCE JUL 1 789 717
COOLING
TODAY 0 MM
MONTH TO DATE 0 0
SINCE DEC 1 0 0
SINCE JAN 1 211 444
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION E (100)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION E (90)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION E (90)
AVERAGE WIND SPEED 8.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 12:00 AM
LOWEST 74 1:00 PM
AVERAGE 87
......................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 57 66 2000
2017
MINIMUM TEMPERATURE (F) 37 24 2008
SUNRISE AND SUNSET
DECEMBER 16 2025......SUNRISE 7:19 AM PST SUNSET 4:51 PM PST
DECEMBER 17 2025......SUNRISE 7:20 AM PST SUNSET 4:51 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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