S
M
T
W
T
F
S
26
57°
33°
27
69°
40°
28
56°
46°
29
54°
45°
30
51°
37°
1
47°
30°
2
47°
38°
3
54°
35°
4
58°
43°
5
66°
43°
6
49°
39°
7
52°
36°
8
51°
34°
9
57°
40°
10
57°
38°
11
53°
36°
12
51°
32°
13
56°
44°
14
51°
44°
15
62°
46°
16
65°
44°
17
67°
47°
18
72°
52°
19
78°
57°
20
66°
38°
21
60°
39°
22
63°
50°
23
56°
48°
24
57°
50°
25
61°
50°
26
65°
52°
27
67°
51°
28
68°
51°
29
69°
53°
30
72°
54°
31
70°
55°
1
69°
51°
2
65°
54°
3
63°
54°
4
65°
53°
5
64°
54°
6
67°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Napanee
Napanee's May 2026 forecast shows daily high temperatures ranging from 56° to 78°, with overnight lows between 38° and 57°. The average high for May is 66° with an average low of 51°. 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 Napanee. See also: June | July | August.
