S
M
T
W
T
F
S
26
92°
71°
27
89°
69°
28
92°
63°
29
90°
66°
30
97°
56°
31
98°
58°
1
98°
69°
2
84°
64°
3
79°
56°
4
84°
56°
5
92°
62°
6
98°
64°
7
97°
67°
8
97°
65°
9
94°
66°
10
92°
67°
11
93°
64°
12
89°
62°
13
90°
60°
14
88°
57°
15
87°
60°
16
90°
60°
17
89°
61°
18
97°
61°
19
90°
61°
20
84°
60°
21
84°
60°
22
86°
59°
23
88°
60°
24
89°
59°
25
86°
59°
26
88°
58°
27
89°
60°
28
89°
60°
29
88°
59°
30
85°
58°
31
82°
58°
1
80°
57°
2
76°
56°
3
75°
55°
4
79°
56°
5
84°
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 75° to 98°, with overnight lows between 55° and 67°. The average high for August is 88° with an average low of 60°. 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.