S
M
T
W
T
F
S
26
52°
28°
27
59°
20°
28
64°
33°
29
57°
35°
30
55°
36°
1
52°
33°
2
54°
35°
3
53°
34°
4
55°
37°
5
58°
36°
6
56°
35°
7
53°
36°
8
54°
36°
9
54°
36°
10
56°
35°
11
55°
37°
12
54°
33°
13
58°
41°
14
55°
37°
15
54°
34°
16
54°
35°
17
55°
36°
18
54°
36°
19
57°
43°
20
65°
43°
21
58°
40°
22
57°
38°
23
57°
41°
24
58°
40°
25
59°
39°
26
58°
40°
27
58°
38°
28
60°
46°
29
68°
47°
30
70°
47°
31
66°
44°
1
63°
42°
2
62°
43°
3
62°
41°
4
63°
46°
5
64°
45°
6
63°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Napan
Napan's May 2026 forecast shows daily high temperatures ranging from 52° to 70°, with overnight lows between 33° and 47°. The average high for May is 58° with an average low of 39°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Napan. See also: June | July | August.
