Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS46 KMTR 180025
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
525 PM PDT MON AUG 17 2026
...................................
...THE NAPA AIRPORT CLIMATE SUMMARY FOR AUGUST 17 2026...
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
MAXIMUM 75 3:51 PM 94 2020 80 -5 78
MINIMUM 56 7:19 AM 45 2007 54 2 54
AVERAGE 66 67 -1 66
PRECIPITATION (IN)
TODAY 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
TODAY 0 0
MONTH TO DATE 5 5
SINCE JUN 1 49 107
SINCE JUL 1 28 43
COOLING
TODAY 1 1
MONTH TO DATE 23 36
SINCE JUN 1 139 56
SINCE JAN 1 156 73
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION SW (220)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 7.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
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 TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 94 2020
MINIMUM TEMPERATURE (F) 54 46 2007
SUNRISE AND SUNSET
AUGUST 17 2026........SUNRISE 6:26 AM PDT SUNSET 8:00 PM PDT
AUGUST 18 2026........SUNRISE 6:27 AM PDT SUNSET 7:58 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$