S
M
T
W
T
F
S
29
88°
45°
30
88°
44°
31
88°
45°
1
60°
55°
2
67°
42°
3
77°
42°
4
84°
42°
5
86°
42°
6
70°
42°
7
70°
42°
8
81°
47°
9
81°
47°
10
74°
54°
11
66°
53°
12
66°
48°
13
67°
46°
14
68°
43°
15
68°
43°
16
73°
42°
17
76°
43°
18
78°
42°
19
70°
43°
20
68°
48°
21
63°
52°
22
66°
42°
23
73°
45°
24
72°
48°
25
72°
48°
26
64°
52°
27
66°
44°
28
74°
46°
29
77°
48°
30
77°
49°
1
72°
50°
2
71°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Napa
Napa's April 2026 forecast shows daily high temperatures ranging from 66° to 77°, with overnight lows between 44° and 52°. The average high for April is 73° with an average low of 48°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Napa. See also: May | June | July.
