S
M
T
W
T
F
S
26
99°
64°
27
104°
65°
28
105°
66°
29
104°
66°
30
103°
65°
31
104°
65°
1
104°
64°
2
103°
65°
3
105°
66°
4
103°
65°
5
102°
64°
6
103°
64°
7
103°
63°
8
104°
64°
9
104°
65°
10
101°
52°
11
93°
51°
12
92°
52°
13
94°
53°
14
98°
55°
15
100°
54°
16
99°
55°
17
99°
58°
18
101°
58°
19
102°
61°
20
104°
60°
21
98°
59°
22
100°
59°
23
100°
57°
24
99°
58°
25
99°
55°
26
98°
57°
27
97°
58°
28
95°
57°
29
94°
58°
30
93°
55°
31
88°
52°
1
88°
56°
2
92°
53°
3
93°
51°
4
85°
50°
5
86°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Glenns Ferry
Glenns Ferry's August 2026 forecast shows daily high temperatures ranging from 85° to 105°, with overnight lows between 50° and 66°. The average high for August is 99° with an average low of 59°. 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 Glenns Ferry. See also: September | October | November.