S
M
T
W
T
F
S
26
54°
30°
27
45°
36°
28
46°
28°
29
37°
32°
30
43°
27°
1
55°
32°
2
60°
33°
3
65°
39°
4
45°
26°
5
41°
26°
6
45°
29°
7
55°
37°
8
60°
34°
9
53°
37°
10
59°
39°
11
61°
39°
12
61°
38°
13
65°
41°
14
64°
40°
15
56°
35°
16
58°
40°
17
58°
45°
18
62°
45°
19
64°
41°
20
59°
37°
21
59°
38°
22
60°
39°
23
59°
38°
24
61°
39°
25
61°
40°
26
66°
46°
27
67°
47°
28
62°
43°
29
69°
44°
30
62°
41°
31
63°
48°
1
64°
48°
2
65°
49°
3
63°
49°
4
63°
48°
5
64°
51°
6
65°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Roseau
Roseau's May 2026 forecast shows daily high temperatures ranging from 41° to 69°, with overnight lows between 26° and 51°. The average high for May is 60° 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 Roseau. See also: June | July | August.
