782
CDUS46 KMTR 200030
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
430 PM PST FRI DEC 19 2025
...............................
..THE NAPA AIRPORT CLIMATE SUMMARY FOR DECEMBER 19 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 61 12:09 PM 78 1999 57 4 52
MINIMUM 53 4:11 AM 21 2006 37 16 41
AVERAGE 57 47 10 47
PRECIPITATION (IN)
TODAY 0.13 0.00
MONTH TO DATE 0.31 1.13
SINCE OCT 1 3.77 5.39
SINCE JAN 1 12.09 19.23
DEGREE DAYS
HEATING
TODAY 8 18
MONTH TO DATE 347 214
SINCE DEC 1 347 214
SINCE JUL 1 822 754
COOLING
TODAY 0 0
MONTH TO DATE 0 0
SINCE DEC 1 0 0
SINCE JAN 1 211 444
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION S (180)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 5.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 12:00 AM
LOWEST 78 12:00 PM
AVERAGE 89
......................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 57 67 1999
MINIMUM TEMPERATURE (F) 37 25 2008
SUNRISE AND SUNSET
DECEMBER 19 2025......SUNRISE 7:21 AM PST SUNSET 4:52 PM PST
DECEMBER 20 2025......SUNRISE 7:22 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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