340
CDUS46 KMTR 160827
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
127 AM PDT SAT AUG 16 2025
...............................
..THE NAPA AIRPORT CLIMATE SUMMARY FOR AUGUST 15 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 80 6:23 PM 102 2020 80 0 82
MINIMUM 53 5:33 AM 47 2000 55 -2 55
2011
AVERAGE 67 67 0 69
PRECIPITATION (IN)
YESTERDAY 0.00 0.00
MONTH TO DATE 0.00 0.00
SINCE OCT 1 16.08 19.88
SINCE JAN 1 8.10 13.84
DEGREE DAYS
HEATING
YESTERDAY 0 0
MONTH TO DATE 5 6
SINCE JUN 1 107 48
SINCE JUL 1 43 11
COOLING
YESTERDAY 2 4
MONTH TO DATE 32 34
SINCE JUN 1 52 248
SINCE JAN 1 69 258
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION SW (210)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION S (180)
AVERAGE WIND SPEED 8.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 4:00 AM
LOWEST 52 2:00 PM
AVERAGE 76
......................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 101 2015
MINIMUM TEMPERATURE (F) 55 46 2014
SUNRISE AND SUNSET
AUGUST 16 2025........SUNRISE 6:25 AM PDT SUNSET 8:01 PM PDT
AUGUST 17 2025........SUNRISE 6:26 AM PDT SUNSET 7:59 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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