S
M
T
W
T
F
S
26
63°
34°
27
65°
37°
28
66°
39°
29
59°
37°
30
59°
41°
1
45°
36°
2
53°
32°
3
43°
34°
4
55°
30°
5
70°
38°
6
54°
42°
7
54°
39°
8
52°
36°
9
59°
34°
10
60°
41°
11
56°
36°
12
44°
31°
13
59°
31°
14
63°
41°
15
64°
47°
16
75°
54°
17
64°
31°
18
68°
52°
19
74°
61°
20
75°
35°
21
54°
29°
22
61°
34°
23
65°
37°
24
67°
40°
25
68°
42°
26
63°
40°
27
67°
43°
28
66°
42°
29
64°
39°
30
66°
44°
31
69°
43°
1
63°
42°
2
64°
43°
3
64°
45°
4
65°
45°
5
64°
46°
6
65°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Allagash
Allagash's May 2026 forecast shows daily high temperatures ranging from 54° to 75°, with overnight lows between 29° and 61°. The average high for May is 66° with an average low of 42°. 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 Allagash. See also: June | July | August.
