S
M
T
W
T
F
S
26
57°
36°
27
59°
48°
28
61°
45°
29
59°
45°
30
73°
43°
1
66°
43°
2
55°
45°
3
50°
43°
4
55°
37°
5
50°
36°
6
52°
32°
7
59°
45°
8
57°
43°
9
52°
37°
10
52°
36°
11
50°
41°
12
55°
41°
13
52°
41°
14
52°
45°
15
52°
43°
16
54°
43°
17
54°
37°
18
57°
36°
19
63°
48°
20
63°
48°
21
68°
46°
22
68°
59°
23
64°
54°
24
65°
54°
25
65°
48°
26
63°
42°
27
60°
46°
28
67°
50°
29
63°
48°
30
60°
49°
31
58°
47°
1
61°
47°
2
61°
46°
3
59°
49°
4
60°
48°
5
55°
48°
6
57°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Portmahomack
Portmahomack's May 2026 forecast shows daily high temperatures ranging from 55° to 67°, with overnight lows between 42° and 54°. The average high for May is 61° with an average low of 48°. 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 Portmahomack. See also: June | July | August.
