Climatological Report (Daily)
Issued by NWS
Issued by NWS
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873
CDUS46 KMTR 010838
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
138 AM PDT WED OCT 01 2025
...................................
...THE NAPA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 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 73 12:54 PM 98 2001 79 -6 91
MINIMUM 63 11:59 PM 37 2009 49 14 47
AVERAGE 68 64 4 69
PRECIPITATION (IN)
YESTERDAY 0.07 0.00
MONTH TO DATE 0.22 T
SINCE OCT 1 16.30 19.88
SINCE JAN 1 8.32 13.84
DEGREE DAYS
HEATING
YESTERDAY 0 0
MONTH TO DATE 2 26
SINCE SEP 1 2 26
SINCE JUL 1 47 39
COOLING
YESTERDAY 3 4
MONTH TO DATE 90 58
SINCE SEP 1 90 58
SINCE JAN 1 201 359
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION SW (210)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 10.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 1:00 AM
LOWEST 66 12:00 PM
AVERAGE 82
..........................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 79 99 2024
MINIMUM TEMPERATURE (F) 49 38 2006
2019
SUNRISE AND SUNSET
OCTOBER 1 2025.......SUNRISE 7:05 AM PDT SUNSET 6:51 PM PDT
OCTOBER 2 2025.......SUNRISE 7:06 AM PDT SUNSET 6:50 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$