990
CDUS46 KMTR 090027
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
527 PM PDT MON SEP 08 2025
...............................
..THE NAPA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 8 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 76 4:13 PM 103 2022 81 -5 87
MINIMUM 52 6:30 AM 43 2002 52 0 45
AVERAGE 64 66 -2 66
PRECIPITATION (IN)
TODAY 0.00 0.00
MONTH TO DATE T 0.00
SINCE OCT 1 16.08 19.88
SINCE JAN 1 8.10 13.84
DEGREE DAYS
HEATING
TODAY 1 0
MONTH TO DATE 1 0
SINCE SEP 1 1 0
SINCE JUL 1 46 13
COOLING
TODAY 0 1
MONTH TO DATE 18 30
SINCE SEP 1 18 30
SINCE JAN 1 129 331
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION S (200)
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION S (200)
AVERAGE WIND SPEED 8.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 5:00 AM
LOWEST 62 2:00 PM
AVERAGE 81
......................................................
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 2025.....SUNRISE 6:45 AM PDT SUNSET 7:27 PM PDT
SEPTEMBER 9 2025.....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.
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