Monthly Historical AveragesNapa, CA
Average Temperature
High
21°
Feels 20
Low
8°
Feels 7
Average Precipitation
4 Days
26.9mm
0cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastTuesday, April 21, 2026
Day
16°Feels 15
Wind
21 km/h SW
Gust
32 km/h
Humidity
75%
P.O.P
100%
Rain
~5 mm
Night
6°Feels 6
Wind
16 km/h SW
Gust
25 km/h
Humidity
95%
P.O.P
90%
Rain
5-10 mm
Historical AveragesApr 21
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity