S
M
T
W
T
F
S
26
78°
56°
27
86°
59°
28
87°
60°
29
88°
51°
30
83°
55°
31
82°
58°
1
87°
54°
2
87°
51°
3
81°
54°
4
83°
55°
5
87°
58°
6
88°
58°
7
85°
51°
8
80°
54°
9
80°
54°
10
85°
58°
11
87°
57°
12
87°
53°
13
86°
57°
14
86°
57°
15
87°
54°
16
78°
52°
17
77°
51°
18
77°
53°
19
80°
55°
20
79°
48°
21
80°
47°
22
75°
52°
23
77°
50°
24
76°
53°
25
81°
47°
26
76°
52°
27
75°
46°
28
74°
47°
29
75°
50°
30
76°
48°
31
80°
52°
1
78°
49°
2
73°
49°
3
73°
51°
4
80°
47°
5
75°
43°
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 88°, with overnight lows between 43° and 60°. The average high for August is 81° with an average low of 53°. 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.