Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS46 KMTR 310835
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1235 AM PST WED DEC 31 2025
...................................
...THE NAPA AIRPORT CLIMATE SUMMARY FOR DECEMBER 30 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 1:47 PM 63 2013 56 -9 57
2017
MINIMUM 34 7:13 AM 26 2015 38 -4 37
AVERAGE 41 47 -6 47
PRECIPITATION (IN)
YESTERDAY 0.00 0.00
MONTH TO DATE 3.43 3.72
SINCE OCT 1 6.89 7.98
SINCE JAN 1 15.21 21.82
DEGREE DAYS
HEATING
YESTERDAY 24 18
MONTH TO DATE 487 365
SINCE DEC 1 487 365
SINCE JUL 1 962 905
COOLING
YESTERDAY 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 (90)
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION E (90)
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION E (100)
AVERAGE WIND SPEED 14.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 1:00 AM
LOWEST 85 12:00 PM
AVERAGE 93
..........................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 56 64 2020
MINIMUM TEMPERATURE (F) 38 24 2015
SUNRISE AND SUNSET
DECEMBER 31 2025......SUNRISE 7:26 AM PST SUNSET 4:59 PM PST
JANUARY 1 2026.......SUNRISE 7:26 AM PST SUNSET 5:00 PM PST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$