S
M
T
W
T
F
S
26
66°
28°
27
68°
30°
28
68°
32°
29
51°
36°
30
55°
41°
1
51°
34°
2
52°
28°
3
41°
33°
4
57°
33°
5
80°
39°
6
57°
48°
7
59°
32°
8
54°
30°
9
60°
28°
10
59°
43°
11
60°
37°
12
52°
27°
13
60°
29°
14
64°
43°
15
67°
45°
16
78°
43°
17
71°
40°
18
66°
35°
19
84°
49°
20
86°
50°
21
57°
29°
22
65°
28°
23
66°
27°
24
70°
38°
25
59°
47°
26
80°
47°
27
70°
47°
28
52°
43°
29
58°
33°
30
59°
35°
31
63°
32°
1
65°
41°
2
68°
40°
3
75°
48°
4
82°
53°
5
75°
55°
6
70°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Island Falls
Island Falls's May 2026 forecast shows daily high temperatures ranging from 63° to 82°, with overnight lows between 32° and 55°. The average high for May is 71° with an average low of 46°. 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 Island Falls. See also: June | July | August.
