S
M
T
W
T
F
S
26
61°
47°
27
50°
44°
28
52°
46°
29
53°
45°
30
55°
47°
1
58°
45°
2
56°
46°
3
54°
47°
4
53°
45°
5
56°
44°
6
54°
48°
7
55°
47°
8
52°
45°
9
51°
46°
10
51°
46°
11
52°
45°
12
52°
47°
13
53°
45°
14
52°
46°
15
53°
47°
16
52°
49°
17
51°
48°
18
52°
49°
19
53°
49°
20
54°
48°
21
58°
49°
22
59°
50°
23
58°
49°
24
60°
50°
25
60°
50°
26
61°
49°
27
60°
50°
28
59°
50°
29
59°
49°
30
54°
48°
31
54°
45°
1
53°
44°
2
54°
48°
3
54°
49°
4
55°
50°
5
58°
48°
6
57°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cape Horn
Cape Horn's May 2026 forecast shows daily high temperatures ranging from 50° to 61°, with overnight lows between 44° and 50°. The average high for May is 55° with an average low of 47°. 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 Cape Horn. See also: June | July | August.