Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS46 KMTR 230041
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
541 PM PDT FRI AUG 22 2025
...................................
...THE NAPA AIRPORT CLIMATE SUMMARY FOR AUGUST 22 2025...
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
MAXIMUM 79 4:08 PM 97 1999 81 -2 79
MINIMUM 52 6:27 AM 45 2006 54 -2 55
AVERAGE 66 67 -1 67
PRECIPITATION (IN)
TODAY 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
TODAY 0 0
MONTH TO DATE 7 7
SINCE JUN 1 109 49
SINCE JUL 1 45 12
COOLING
TODAY 1 2
MONTH TO DATE 51 52
SINCE JUN 1 71 266
SINCE JAN 1 88 276
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION SW (210)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION S (180)
AVERAGE WIND SPEED 5.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 5:00 AM
LOWEST 50 2:00 PM
AVERAGE 73
..........................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 81 96 2010
MINIMUM TEMPERATURE (F) 54 45 2005
SUNRISE AND SUNSET
AUGUST 22 2025........SUNRISE 6:30 AM PDT SUNSET 7:53 PM PDT
AUGUST 23 2025........SUNRISE 6:31 AM PDT SUNSET 7:51 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$