243
CDUS46 KMTR 260039
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
539 PM PDT THU SEP 25 2025
...............................
..THE NAPA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 25 2025
VALID TODAY AS OF 0500 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 76 3:18 PM 99 2016 80 -4 75
MINIMUM 63 8:07 AM 37 2005 50 13 56
AVERAGE 70 65 5 66
PRECIPITATION (IN)
TODAY 0.09 0.00
MONTH TO DATE 0.12 T
SINCE OCT 1 16.20 19.88
SINCE JAN 1 8.22 13.84
DEGREE DAYS
HEATING
TODAY 0 0
MONTH TO DATE 1 20
SINCE SEP 1 1 20
SINCE JUL 1 46 33
COOLING
TODAY 5 1
MONTH TO DATE 88 47
SINCE SEP 1 88 47
SINCE JAN 1 199 348
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION SW (210)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 9.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 4:00 AM
LOWEST 59 4:00 PM
AVERAGE 75
......................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 79 99 2009
2016
MINIMUM TEMPERATURE (F) 50 43 2013
2018
SUNRISE AND SUNSET
SEPTEMBER 25 2025.....SUNRISE 7:00 AM PDT SUNSET 7:01 PM PDT
SEPTEMBER 26 2025.....SUNRISE 7:01 AM PDT SUNSET 6:59 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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