Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS46 KMTR 160826
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
126 AM PDT TUE SEP 16 2025
...................................
...THE NAPA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 15 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 91R 5:21 PM 91 2004 81 10 75
MINIMUM 61 8:16 AM 39 2006 51 10 52
AVERAGE 76 66 10 64
PRECIPITATION (IN)
YESTERDAY 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
YESTERDAY 0 1
MONTH TO DATE 1 6
SINCE SEP 1 1 6
SINCE JUL 1 46 19
COOLING
YESTERDAY 11 0
MONTH TO DATE 40 36
SINCE SEP 1 40 36
SINCE JAN 1 151 337
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION SW (220)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION SW (240)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 5.4
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 12:00 AM
LOWEST 25 4:00 PM
AVERAGE 61
..........................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 85 2004
MINIMUM TEMPERATURE (F) 51 38 2006
SUNRISE AND SUNSET
SEPTEMBER 16 2025.....SUNRISE 6:52 AM PDT SUNSET 7:15 PM PDT
SEPTEMBER 17 2025.....SUNRISE 6:53 AM PDT SUNSET 7:13 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$