Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS46 KMTR 130828
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
128 AM PDT WED AUG 13 2025
...................................
...THE NAPA AIRPORT CLIMATE SUMMARY FOR AUGUST 12 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 75 5:33 PM 91 1998 80 -5 74
MINIMUM 56 12:25 AM 47 2003 55 1 55
2015
AVERAGE 66 67 -1 65
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 1 0
MONTH TO DATE 25 27
SINCE JUN 1 45 241
SINCE JAN 1 62 251
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 12 RESULTANT WIND DIRECTION W (250)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION W (260)
AVERAGE WIND SPEED 13.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 12:00 AM
LOWEST 54 4:00 PM
AVERAGE 74
..........................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 94 2020
MINIMUM TEMPERATURE (F) 55 43 2007
SUNRISE AND SUNSET
AUGUST 13 2025........SUNRISE 6:23 AM PDT SUNSET 8:05 PM PDT
AUGUST 14 2025........SUNRISE 6:23 AM PDT SUNSET 8:03 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$