207
CDUS46 KMTR 190039
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
539 PM PDT FRI SEP 18 2026
...............................
..THE NAPA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 18 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 78 3:52 PM 98 2016 80 -2 73
MINIMUM 48 7:08 AM 38 2008 51 -3 61
AVERAGE 63 66 -3 67
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 2 0
MONTH TO DATE 19 1
SINCE SEP 1 19 1
SINCE JUL 1 55 46
COOLING
TODAY 0 2
MONTH TO DATE 37 55
SINCE SEP 1 37 55
SINCE JAN 1 211 166
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION S (200)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION S (200)
AVERAGE WIND SPEED 5.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
FOG W/VISIBILITY <= 1/4 MILE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 3:00 AM
LOWEST 54 2:00 PM
AVERAGE 77
......................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 97 2002
MINIMUM TEMPERATURE (F) 51 41 2008
SUNRISE AND SUNSET
SEPTEMBER 18 2026.....SUNRISE 6:54 AM PDT SUNSET 7:12 PM PDT
SEPTEMBER 19 2026.....SUNRISE 6:54 AM PDT SUNSET 7:10 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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