S
M
T
W
T
F
S
26
82°
61°
27
80°
55°
28
81°
59°
29
81°
60°
30
82°
52°
31
80°
55°
1
80°
52°
2
77°
59°
3
80°
60°
4
83°
63°
5
84°
62°
6
84°
59°
7
83°
53°
8
83°
54°
9
82°
52°
10
81°
51°
11
73°
52°
12
73°
56°
13
79°
57°
14
81°
57°
15
82°
54°
16
82°
58°
17
81°
51°
18
80°
55°
19
79°
50°
20
77°
53°
21
73°
49°
22
71°
49°
23
72°
48°
24
71°
49°
25
72°
50°
26
71°
51°
27
70°
56°
28
69°
49°
29
70°
49°
30
71°
55°
31
71°
57°
1
72°
58°
2
76°
58°
3
79°
52°
4
80°
58°
5
76°
53°
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 69° to 84°, with overnight lows between 48° and 63°. The average high for August is 77° with an average low of 55°. 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.