299
CDUS46 KMTR 130037
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
437 PM PST FRI DEC 12 2025
...............................
..THE NAPA AIRPORT CLIMATE SUMMARY FOR DECEMBER 12 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 2:11 PM 64 2018 58 -9 57
MINIMUM 41 7:51 AM 26 2013 38 3 46
AVERAGE 45 48 -3 52
PRECIPITATION (IN)
TODAY 0.00 0.62
MONTH TO DATE T 0.68
SINCE OCT 1 3.46 4.94
SINCE JAN 1 11.78 18.78
DEGREE DAYS
HEATING
TODAY 20 13
MONTH TO DATE 231 165
SINCE DEC 1 231 165
SINCE JUL 1 706 705
COOLING
TODAY 0 0
MONTH TO DATE 0 0
SINCE DEC 1 0 0
SINCE JAN 1 211 444
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 13 RESULTANT WIND DIRECTION E (80)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 13.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 12:00 AM
LOWEST 82 12:00 PM
AVERAGE 91
......................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 57 62 2023
MINIMUM TEMPERATURE (F) 38 24 2007
2013
SUNRISE AND SUNSET
DECEMBER 12 2025......SUNRISE 7:17 AM PST SUNSET 4:49 PM PST
DECEMBER 13 2025......SUNRISE 7:17 AM PST SUNSET 4:50 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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