S
M
T
W
T
F
S
26
53°
31°
27
50°
32°
28
53°
36°
29
50°
44°
30
50°
44°
1
51°
44°
2
50°
43°
3
55°
45°
4
57°
45°
5
55°
43°
6
56°
42°
7
57°
40°
8
60°
43°
9
59°
44°
10
58°
43°
11
60°
44°
12
58°
43°
13
58°
42°
14
56°
41°
15
53°
39°
16
53°
39°
17
56°
40°
18
58°
41°
19
55°
44°
20
54°
44°
21
54°
42°
22
55°
42°
23
59°
45°
24
60°
46°
25
58°
46°
26
56°
45°
27
57°
44°
28
60°
46°
29
61°
46°
30
60°
45°
31
59°
46°
1
60°
47°
2
57°
46°
3
60°
46°
4
62°
47°
5
63°
47°
6
63°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Port Armstrong
Port Armstrong's May 2026 forecast shows daily high temperatures ranging from 50° to 63°, with overnight lows between 39° and 47°. The average high for May is 57° with an average low of 44°. 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 Port Armstrong. See also: June | July | August.
