S
M
T
W
T
F
S
26
52°
28°
27
59°
20°
28
N/A
29
56°
34°
30
60°
38°
1
57°
35°
2
54°
35°
3
57°
34°
4
60°
37°
5
63°
38°
6
61°
37°
7
59°
36°
8
54°
36°
9
54°
36°
10
58°
35°
11
59°
38°
12
56°
37°
13
53°
36°
14
54°
39°
15
59°
41°
16
57°
38°
17
57°
41°
18
61°
43°
19
61°
43°
20
62°
44°
21
65°
44°
22
65°
40°
23
59°
40°
24
58°
42°
25
59°
44°
26
60°
43°
27
60°
43°
28
61°
42°
29
60°
46°
30
61°
45°
31
60°
45°
1
62°
44°
2
61°
42°
3
61°
42°
4
62°
43°
5
61°
43°
6
63°
44°
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 53° to 65°, with overnight lows between 34° and 46°. The average high for May is 59° with an average low of 40°. 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.
