923
CDUS46 KMTR 030839
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
139 AM PDT WED SEP 03 2025
...............................
..THE NAPA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 2 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 74 2:26 PM 107 2017 81 -7 82
MINIMUM 59 5:29 AM 46 2008 53 6 49
AVERAGE 67 67 0 66
PRECIPITATION (IN)
YESTERDAY T 0.00
MONTH TO DATE T 0.00
SINCE OCT 1 16.08 19.88
SINCE JAN 1 8.10 13.84
DEGREE DAYS
HEATING
YESTERDAY 0 0
MONTH TO DATE 0 0
SINCE SEP 1 0 0
SINCE JUL 1 45 13
COOLING
YESTERDAY 2 1
MONTH TO DATE 9 4
SINCE SEP 1 9 4
SINCE JAN 1 120 305
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION S (190)
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION S (180)
HIGHEST GUST SPEED 35 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 11.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 2:00 AM
LOWEST 60 10:00 AM
AVERAGE 75
......................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 81 96 2008
2024
MINIMUM TEMPERATURE (F) 53 44 2000
SUNRISE AND SUNSET
SEPTEMBER 3 2025.....SUNRISE 6:41 AM PDT SUNSET 7:35 PM PDT
SEPTEMBER 4 2025.....SUNRISE 6:42 AM PDT SUNSET 7:34 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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