Climatological Report (Daily)
Issued by NWS
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CDUS46 KMTR 030845
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
145 AM PDT SUN AUG 03 2025
...................................
...THE NAPA AIRPORT CLIMATE SUMMARY FOR AUGUST 2 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 74 5:13 PM 95 1998 79 -5 81
MINIMUM 52 6:33 AM 45 2013 55 -3 57
AVERAGE 63 67 -4 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 2 0
MONTH TO DATE 2 0
SINCE JUN 1 104 42
SINCE JUL 1 40 5
COOLING
YESTERDAY 0 4
MONTH TO DATE 0 7
SINCE JUN 1 20 221
SINCE JAN 1 37 231
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 11 RESULTANT WIND DIRECTION SW (210)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 11.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 5:00 AM
LOWEST 59 3:00 PM
AVERAGE 78
..........................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 79 101 1998
MINIMUM TEMPERATURE (F) 55 50 2007
2018
SUNRISE AND SUNSET
AUGUST 3 2025........SUNRISE 6:14 AM PDT SUNSET 8:16 PM PDT
AUGUST 4 2025........SUNRISE 6:15 AM PDT SUNSET 8:15 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$