S
M
T
W
T
F
S
26
72°
46°
27
68°
48°
28
61°
48°
29
70°
52°
30
75°
59°
1
63°
52°
2
63°
52°
3
63°
52°
4
61°
46°
5
55°
52°
6
59°
52°
7
63°
50°
8
68°
52°
9
70°
52°
10
57°
50°
11
55°
48°
12
59°
45°
13
57°
46°
14
55°
46°
15
55°
43°
16
57°
41°
17
59°
48°
18
59°
46°
19
64°
52°
20
66°
52°
21
75°
50°
22
84°
63°
23
72°
57°
24
81°
55°
25
90°
68°
26
91°
65°
27
91°
65°
28
81°
57°
29
72°
60°
30
74°
56°
31
70°
56°
1
73°
58°
2
70°
52°
3
67°
53°
4
64°
51°
5
67°
52°
6
68°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Dinan
Dinan's May 2026 forecast shows daily high temperatures ranging from 64° to 91°, with overnight lows between 51° and 68°. The average high for May is 75° with an average low of 57°. 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 Dinan. See also: June | July | August.
