S
M
T
W
T
F
S
26
86°
57°
27
87°
58°
28
88°
58°
29
83°
52°
30
79°
49°
31
80°
49°
1
82°
53°
2
85°
57°
3
89°
49°
4
87°
49°
5
86°
52°
6
92°
53°
7
91°
55°
8
90°
54°
9
83°
47°
10
83°
47°
11
82°
48°
12
82°
47°
13
81°
51°
14
83°
47°
15
81°
45°
16
81°
45°
17
82°
51°
18
81°
53°
19
86°
47°
20
78°
47°
21
79°
48°
22
79°
41°
23
77°
42°
24
76°
42°
25
77°
43°
26
78°
45°
27
83°
48°
28
85°
49°
29
84°
52°
30
85°
52°
31
84°
51°
1
81°
51°
2
75°
47°
3
74°
48°
4
79°
46°
5
76°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Challis
Challis's August 2026 forecast shows daily high temperatures ranging from 74° to 92°, with overnight lows between 41° and 58°. The average high for August is 82° with an average low of 49°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Challis. See also: September | October | November.
