Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS46 KMTR 240840
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
140 AM PDT THU SEP 24 2026
...................................
...THE NAPA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 23 2026...
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)
YESTERDAY
MAXIMUM 88 4:34 PM 96 2025 80 8 96
MINIMUM 57 8:38 AM 39 2005 50 7 56
AVERAGE 73 65 8 76
PRECIPITATION (IN)
YESTERDAY 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
YESTERDAY 0 0
MONTH TO DATE 31 1
SINCE SEP 1 31 1
SINCE JUL 1 67 46
COOLING
YESTERDAY 8 11
MONTH TO DATE 45 76
SINCE SEP 1 45 76
SINCE JAN 1 219 187
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION S (200)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 5.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 7:00 AM
LOWEST 33 4:00 PM
AVERAGE 65
..........................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 96 2019
MINIMUM TEMPERATURE (F) 50 40 2005
2017
SUNRISE AND SUNSET
SEPTEMBER 24 2026.....SUNRISE 6:59 AM PDT SUNSET 7:03 PM PDT
SEPTEMBER 25 2026.....SUNRISE 7:00 AM PDT SUNSET 7:01 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$