Climatological Report (Daily)
Issued by NWS
Issued by NWS
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902
CDUS46 KMTR 040827
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
127 AM PDT MON AUG 04 2025
...................................
...THE NAPA AIRPORT CLIMATE SUMMARY FOR AUGUST 3 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 77 5:20 PM 101 1998 79 -2 82
MINIMUM 50R 5:51 AM 50 2007 55 -5 59
2018
AVERAGE 64 67 -3 71
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 1 0
MONTH TO DATE 3 0
SINCE JUN 1 105 42
SINCE JUL 1 41 5
COOLING
YESTERDAY 0 6
MONTH TO DATE 0 13
SINCE JUN 1 20 227
SINCE JAN 1 37 237
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION SW (210)
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 11.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
FOG W/VISIBILITY <= 1/4 MILE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 4:00 AM
LOWEST 45 3:00 PM
AVERAGE 73
..........................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 79 95 1998
MINIMUM TEMPERATURE (F) 55 46 2007
SUNRISE AND SUNSET
AUGUST 4 2025........SUNRISE 6:15 AM PDT SUNSET 8:15 PM PDT
AUGUST 5 2025........SUNRISE 6:16 AM PDT SUNSET 8:14 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$