Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS46 KMTR 290832
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
132 AM PDT MON SEP 29 2025
...................................
...THE NAPA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 28 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 69 4:12 PM 103 2020 79 -10 72
MINIMUM 60 12:35 AM 40 2001 49 11 50
AVERAGE 65 64 1 61
PRECIPITATION (IN)
YESTERDAY 0.00 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
YESTERDAY 0 4
MONTH TO DATE 2 24
SINCE SEP 1 2 24
SINCE JUL 1 47 37
COOLING
YESTERDAY 0 0
MONTH TO DATE 85 54
SINCE SEP 1 85 54
SINCE JAN 1 196 355
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION SW (220)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 5.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 10:00 PM
LOWEST 73 2:00 PM
AVERAGE 80
..........................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 79 96 1999
MINIMUM TEMPERATURE (F) 49 35 2019
SUNRISE AND SUNSET
SEPTEMBER 29 2025.....SUNRISE 7:03 AM PDT SUNSET 6:54 PM PDT
SEPTEMBER 30 2025.....SUNRISE 7:04 AM PDT SUNSET 6:53 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$