S
M
T
W
T
F
S
26
65°
51°
27
66°
52°
28
64°
57°
29
66°
54°
30
65°
53°
31
64°
52°
1
65°
53°
2
64°
52°
3
71°
53°
4
70°
56°
5
65°
56°
6
64°
55°
7
69°
56°
8
65°
53°
9
64°
56°
10
66°
57°
11
65°
55°
12
64°
56°
13
64°
50°
14
68°
50°
15
69°
53°
16
69°
51°
17
67°
49°
18
68°
49°
19
65°
50°
20
63°
48°
21
63°
48°
22
66°
50°
23
66°
51°
24
62°
51°
25
61°
48°
26
60°
47°
27
61°
52°
28
62°
47°
29
61°
46°
30
62°
50°
31
66°
51°
1
60°
47°
2
59°
45°
3
58°
45°
4
59°
44°
5
58°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Rainbow
Rainbow's August 2026 forecast shows daily high temperatures ranging from 58° to 71°, with overnight lows between 42° and 57°. The average high for August is 64° with an average low of 51°. 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 Rainbow. See also: September | October | November.