Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS46 KMTR 280831
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
131 AM PDT THU AUG 28 2025
...................................
...THE NAPA AIRPORT CLIMATE SUMMARY FOR AUGUST 27 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 77 3:29 PM 98 2004 81 -4 93
MINIMUM 55 3:29 AM 44 2005 54 1 53
AVERAGE 66 67 -1 73
PRECIPITATION (IN)
YESTERDAY 0.00 0.00
MONTH TO DATE 0.00 T
SINCE OCT 1 16.08 19.88
SINCE JAN 1 8.10 13.84
DEGREE DAYS
HEATING
YESTERDAY 0 0
MONTH TO DATE 7 8
SINCE JUN 1 109 50
SINCE JUL 1 45 13
COOLING
YESTERDAY 1 8
MONTH TO DATE 56 71
SINCE JUN 1 76 285
SINCE JAN 1 93 295
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION SW (230)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION S (200)
AVERAGE WIND SPEED 9.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 12:00 AM
LOWEST 54 2:00 PM
AVERAGE 72
..........................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 81 100 2008
MINIMUM TEMPERATURE (F) 53 45 2005
SUNRISE AND SUNSET
AUGUST 28 2025........SUNRISE 6:36 AM PDT SUNSET 7:44 PM PDT
AUGUST 29 2025........SUNRISE 6:37 AM PDT SUNSET 7:43 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$