Climatological Report (Daily)
Issued by NWS
Issued by NWS
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028
CDUS46 KMTR 290834
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
134 AM PDT WED JUL 29 2026
...................................
...THE NAPA AIRPORT CLIMATE SUMMARY FOR JULY 28 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 81 4:35 PM 96 2015 79 2 76
MINIMUM 51 6:34 AM 49 2016 55 -4 53
AVERAGE 66 67 -1 65
PRECIPITATION (IN)
YESTERDAY 0.00 0.00
MONTH TO DATE T T
SINCE OCT 1 17.03 16.08
SINCE JAN 1 9.60 8.10
DEGREE DAYS
HEATING
YESTERDAY 0 0
MONTH TO DATE 23 35
SINCE JUN 1 44 99
SINCE JUL 1 23 35
COOLING
YESTERDAY 1 0
MONTH TO DATE 68 10
SINCE JUN 1 107 18
SINCE JAN 1 124 35
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION SW (210)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION S (200)
AVERAGE WIND SPEED 9.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 5:00 AM
LOWEST 48 2:00 PM
AVERAGE 73
..........................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 79 85 2015
MINIMUM TEMPERATURE (F) 55 49 2010
SUNRISE AND SUNSET
JULY 29 2026..........SUNRISE 6:09 AM PDT SUNSET 8:21 PM PDT
JULY 30 2026..........SUNRISE 6:10 AM PDT SUNSET 8:20 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$