S
M
T
W
T
F
S
26
57°
25°
27
54°
36°
28
46°
28°
29
43°
28°
30
46°
28°
1
57°
21°
2
66°
34°
3
73°
32°
4
46°
34°
5
39°
28°
6
48°
25°
7
57°
27°
8
63°
28°
9
55°
30°
10
54°
27°
11
70°
30°
12
66°
43°
13
77°
36°
14
81°
55°
15
75°
48°
16
54°
37°
17
54°
36°
18
46°
41°
19
50°
33°
20
65°
47°
21
70°
48°
22
66°
48°
23
65°
48°
24
76°
53°
25
81°
58°
26
77°
55°
27
76°
52°
28
76°
53°
29
79°
56°
30
76°
54°
31
71°
51°
1
69°
46°
2
64°
50°
3
70°
49°
4
73°
52°
5
70°
52°
6
66°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in St. Malo
St. Malo's May 2026 forecast shows daily high temperatures ranging from 50° to 81°, with overnight lows between 33° and 58°. The average high for May is 71° with an average low of 50°. 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 St. Malo. See also: June | July | August.