184
CDUS46 KMTR 110040
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
440 PM PST WED DEC 10 2025
...............................
..THE NAPA AIRPORT CLIMATE SUMMARY FOR DECEMBER 10 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 49 3:03 PM 66 2017 58 -9 55
MINIMUM 43 9:25 AM 21 2013 38 5 42
AVERAGE 46 48 -2 49
PRECIPITATION (IN)
TODAY 0.00 0.00
MONTH TO DATE T 0.00
SINCE OCT 1 3.46 4.26
SINCE JAN 1 11.78 18.10
DEGREE DAYS
HEATING
TODAY 19 16
MONTH TO DATE 192 134
SINCE DEC 1 192 134
SINCE JUL 1 667 674
COOLING
TODAY 0 0
MONTH TO DATE 0 0
SINCE DEC 1 0 0
SINCE JAN 1 211 444
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 12 RESULTANT WIND DIRECTION E (80)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION E (100)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION E (90)
AVERAGE WIND SPEED 12.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 5:00 AM
LOWEST 86 1:00 PM
AVERAGE 92
......................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 58 66 2017
MINIMUM TEMPERATURE (F) 38 25 2013
SUNRISE AND SUNSET
DECEMBER 10 2025......SUNRISE 7:15 AM PST SUNSET 4:49 PM PST
DECEMBER 11 2025......SUNRISE 7:16 AM PST SUNSET 4:49 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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