S
M
T
W
T
F
S
26
52°
27°
27
50°
31°
28
54°
23°
29
59°
33°
30
62°
30°
1
70°
29°
2
73°
34°
3
74°
37°
4
75°
39°
5
70°
43°
6
72°
34°
7
75°
47°
8
75°
40°
9
73°
35°
10
82°
37°
11
83°
41°
12
86°
41°
13
84°
47°
14
71°
37°
15
68°
35°
16
59°
34°
17
50°
26°
18
57°
31°
19
63°
28°
20
65°
34°
21
64°
39°
22
69°
35°
23
78°
39°
24
82°
44°
25
76°
47°
26
72°
44°
27
68°
45°
28
73°
47°
29
66°
51°
30
70°
48°
31
76°
46°
1
78°
47°
2
81°
51°
3
79°
49°
4
81°
50°
5
79°
48°
6
74°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Challis
Challis's May 2026 forecast shows daily high temperatures ranging from 66° to 82°, with overnight lows between 44° and 51°. The average high for May is 75° with an average low of 47°. 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 Challis. See also: June | July | August.
