840
CDUS46 KMTR 010039
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
539 PM PDT MON AUG 31 2026
...............................
..THE NAPA AIRPORT CLIMATE SUMMARY FOR AUGUST 31 2026
VALID TODAY AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 73 3:40 PM 97 2017 81 -8 93
MINIMUM 54 6:28 AM 42 2008 53 1 53
AVERAGE 64 67 -3 73
PRECIPITATION (IN)
TODAY 0.00 0.00
MONTH TO DATE T 0.00
SINCE OCT 1 17.03 16.08
SINCE JAN 1 9.60 8.10
DEGREE DAYS
HEATING
TODAY 1 0
MONTH TO DATE 13 7
SINCE JUN 1 57 109
SINCE JUL 1 36 45
COOLING
TODAY 0 8
MONTH TO DATE 41 74
SINCE JUN 1 157 94
SINCE JAN 1 174 111
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 11 RESULTANT WIND DIRECTION SW (220)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION W (250)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION W (250)
AVERAGE WIND SPEED 12.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 1:00 AM
LOWEST 53 3:00 PM
AVERAGE 72
......................................................
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 2026........SUNRISE 6:38 AM PDT SUNSET 7:40 PM PDT
SEPTEMBER 1 2026.....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.
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