S
M
T
W
T
F
S
26
87°
48°
27
86°
48°
28
88°
49°
29
89°
48°
30
88°
48°
31
87°
47°
1
79°
42°
2
84°
46°
3
88°
47°
4
88°
46°
5
87°
47°
6
83°
44°
7
82°
45°
8
85°
46°
9
86°
46°
10
86°
45°
11
85°
45°
12
82°
44°
13
85°
45°
14
85°
45°
15
84°
44°
16
84°
45°
17
83°
45°
18
83°
44°
19
84°
45°
20
84°
45°
21
87°
45°
22
87°
43°
23
85°
41°
24
82°
39°
25
79°
41°
26
75°
37°
27
74°
33°
28
73°
37°
29
76°
37°
30
81°
32°
31
74°
38°
1
75°
37°
2
81°
36°
3
74°
35°
4
74°
33°
5
75°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Banner
Banner's August 2026 forecast shows daily high temperatures ranging from 73° to 89°, with overnight lows between 32° and 49°. The average high for August is 82° with an average low of 43°. 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 Banner. See also: September | October | November.