S
M
T
W
T
F
S
26
65°
31°
27
60°
44°
28
56°
34°
29
50°
33°
30
42°
30°
1
43°
21°
2
55°
38°
3
58°
40°
4
57°
33°
5
47°
28°
6
44°
29°
7
47°
31°
8
50°
34°
9
52°
33°
10
56°
34°
11
54°
36°
12
56°
36°
13
56°
37°
14
63°
36°
15
57°
38°
16
57°
37°
17
58°
42°
18
58°
44°
19
64°
44°
20
64°
43°
21
60°
42°
22
58°
40°
23
58°
38°
24
59°
38°
25
61°
41°
26
60°
43°
27
60°
46°
28
62°
42°
29
61°
40°
30
66°
41°
31
62°
39°
1
61°
42°
2
61°
41°
3
63°
43°
4
63°
42°
5
64°
42°
6
64°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Crystal Falls
Crystal Falls's May 2026 forecast shows daily high temperatures ranging from 43° to 66°, with overnight lows between 21° and 46°. The average high for May is 58° with an average low of 38°. 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 Crystal Falls. See also: June | July | August.