S
M
T
W
T
F
S
26
93°
65°
27
91°
61°
28
92°
62°
29
93°
60°
30
91°
61°
31
88°
60°
1
89°
60°
2
88°
60°
3
87°
59°
4
86°
60°
5
87°
59°
6
89°
59°
7
89°
58°
8
90°
61°
9
89°
61°
10
93°
60°
11
92°
58°
12
87°
54°
13
85°
53°
14
84°
54°
15
84°
52°
16
83°
56°
17
86°
57°
18
89°
60°
19
90°
61°
20
90°
61°
21
91°
60°
22
90°
60°
23
89°
58°
24
85°
59°
25
84°
60°
26
85°
51°
27
81°
55°
28
81°
47°
29
79°
51°
30
79°
48°
31
82°
49°
1
82°
50°
2
86°
52°
3
85°
53°
4
87°
58°
5
87°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Twin Falls
Twin Falls's August 2026 forecast shows daily high temperatures ranging from 79° to 93°, with overnight lows between 47° and 65°. The average high for August is 87° with an average low of 57°. 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 Twin Falls. See also: September | October | November.