Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS46 KMTR 100838
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
138 AM PDT MON AUG 10 2026
...................................
...THE NAPA AIRPORT CLIMATE SUMMARY FOR AUGUST 9 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 79 3:04 PM 100 2002 79 0 81
MINIMUM 53 3:15 AM 49 2009 55 -2 56
AVERAGE 66 67 -1 69
PRECIPITATION (IN)
YESTERDAY 0.00 0.00
MONTH TO DATE 0.00 0.00
SINCE OCT 1 17.03 16.08
SINCE JAN 1 9.60 8.10
DEGREE DAYS
HEATING
YESTERDAY 0 0
MONTH TO DATE 0 5
SINCE JUN 1 44 107
SINCE JUL 1 23 43
COOLING
YESTERDAY 1 4
MONTH TO DATE 21 22
SINCE JUN 1 137 42
SINCE JAN 1 154 59
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION SW (210)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 9.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
FOG W/VISIBILITY <= 1/4 MILE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 6:00 AM
LOWEST 56 2:00 PM
AVERAGE 78
..........................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 79 93 2002
MINIMUM TEMPERATURE (F) 55 47 2003
SUNRISE AND SUNSET
AUGUST 10 2026........SUNRISE 6:20 AM PDT SUNSET 8:09 PM PDT
AUGUST 11 2026........SUNRISE 6:21 AM PDT SUNSET 8:07 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$