Climatological Report (Daily)
Issued by NWS
Issued by NWS
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912
CDUS46 KMTR 090038
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
538 PM PDT TUE SEP 08 2026
...................................
...THE NAPA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 8 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 94 4:25 PM 103 2022 81 13 76
MINIMUM 50 7:15 AM 43 2002 52 -2 52
AVERAGE 72 66 6 64
PRECIPITATION (IN)
TODAY 0.00 0.00
MONTH TO DATE 0.10 T
SINCE OCT 1 17.13 16.08
SINCE JAN 1 9.70 8.10
DEGREE DAYS
HEATING
TODAY 0 1
MONTH TO DATE 10 1
SINCE SEP 1 10 1
SINCE JUL 1 46 46
COOLING
TODAY 7 0
MONTH TO DATE 12 18
SINCE SEP 1 12 18
SINCE JAN 1 186 129
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION SW (230)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION SW (230)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION W (250)
AVERAGE WIND SPEED 4.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 6:00 AM
LOWEST 21 4:00 PM
AVERAGE 55
..........................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 81 99 2015
MINIMUM TEMPERATURE (F) 52 43 2002
SUNRISE AND SUNSET
SEPTEMBER 8 2026.....SUNRISE 6:45 AM PDT SUNSET 7:28 PM PDT
SEPTEMBER 9 2026.....SUNRISE 6:46 AM PDT SUNSET 7:26 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$