845
CDUS46 KMTR 140837
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1237 AM PST SUN DEC 14 2025
...............................
..THE NAPA AIRPORT CLIMATE SUMMARY FOR DECEMBER 13 2025
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)
YESTERDAY
MAXIMUM 47 2:05 PM 62 2023 57 -10 57
MINIMUM 38 7:12 PM 24 2007 38 0 49
2013
AVERAGE 43 47 -4 53
PRECIPITATION (IN)
YESTERDAY 0.00 0.45
MONTH TO DATE T 1.13
SINCE OCT 1 3.46 5.39
SINCE JAN 1 11.78 19.23
DEGREE DAYS
HEATING
YESTERDAY 22 12
MONTH TO DATE 254 177
SINCE DEC 1 254 177
SINCE JUL 1 729 717
COOLING
YESTERDAY 0 0
MONTH TO DATE 0 0
SINCE DEC 1 0 0
SINCE JAN 1 211 444
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION E (90)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION E (90)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION E (110)
AVERAGE WIND SPEED 8.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
FOG W/VISIBILITY <= 1/4 MILE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 12:00 AM
LOWEST 82 2:00 PM
AVERAGE 91
......................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 57 63 2017
MINIMUM TEMPERATURE (F) 38 24 2008
SUNRISE AND SUNSET
DECEMBER 14 2025......SUNRISE 7:18 AM PST SUNSET 4:50 PM PST
DECEMBER 15 2025......SUNRISE 7:19 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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