Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS46 KMTR 180829
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
129 AM PDT TUE AUG 18 2026
...................................
...THE NAPA AIRPORT CLIMATE SUMMARY FOR AUGUST 17 2026...
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)
YESTERDAY
MAXIMUM 75 3:51 PM 94 2020 80 -5 78
MINIMUM 55 11:14 PM 45 2007 54 1 54
AVERAGE 65 67 -2 66
PRECIPITATION (IN)
YESTERDAY 0.00 0.00
MONTH TO DATE 0.00 0.00
SINCE OCT 1 17.03 16.08
SINCE JAN 1 9.60 8.10
DEGREE DAYS
HEATING
YESTERDAY 0 0
MONTH TO DATE 5 5
SINCE JUN 1 49 107
SINCE JUL 1 28 43
COOLING
YESTERDAY 0 1
MONTH TO DATE 22 36
SINCE JUN 1 138 56
SINCE JAN 1 155 73
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION SW (210)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 7.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 4:00 AM
LOWEST 60 3:00 PM
AVERAGE 79
..........................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 94 2020
MINIMUM TEMPERATURE (F) 54 46 2007
SUNRISE AND SUNSET
AUGUST 18 2026........SUNRISE 6:27 AM PDT SUNSET 7:58 PM PDT
AUGUST 19 2026........SUNRISE 6:28 AM PDT SUNSET 7:57 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$