Monthly Historical AveragesNapa, CA
Average Temperature
High
15°
Feels 15
Low
4°
Feels 3
Average Precipitation
7 Days
56.9mm
0cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastThursday, January 1, 2026
Day
14°Feels 13
Wind
18 km/h S
Gust
27 km/h
Humidity
87%
P.O.P
100%
Rain
~5 mm
Night
11°Feels 11
Wind
9 km/h SE
Gust
14 km/h
Humidity
96%
P.O.P
90%
Rain
5-10 mm
Historical AveragesJan 1
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity