Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS46 KMTR 010042
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
542 PM PDT SUN AUG 31 2025
...................................
...THE NAPA AIRPORT CLIMATE SUMMARY FOR AUGUST 31 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 93 3:42 PM 97 2017 81 12 80
MINIMUM 53 5:24 AM 42 2008 53 0 55
AVERAGE 73 67 6 68
PRECIPITATION (IN)
TODAY 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
TODAY 0 0
MONTH TO DATE 7 8
SINCE JUN 1 109 50
SINCE JUL 1 45 13
COOLING
TODAY 8 3
MONTH TO DATE 74 77
SINCE JUN 1 94 291
SINCE JAN 1 111 301
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION S (200)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 5.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 86 5:00 AM
LOWEST 24 4:00 PM
AVERAGE 55
..........................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 81 106 2017
MINIMUM TEMPERATURE (F) 53 45 1999
SUNRISE AND SUNSET
AUGUST 31 2025........SUNRISE 6:38 AM PDT SUNSET 7:40 PM PDT
SEPTEMBER 1 2025.....SUNRISE 6:39 AM PDT SUNSET 7:38 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$