S
M
T
W
T
F
S
26
72°
48°
27
69°
55°
28
63°
53°
29
68°
50°
30
73°
54°
31
75°
53°
1
71°
52°
2
60°
51°
3
67°
55°
4
63°
55°
5
64°
54°
6
65°
55°
7
64°
56°
8
68°
53°
9
69°
55°
10
71°
56°
11
68°
55°
12
67°
55°
13
68°
56°
14
66°
55°
15
67°
55°
16
65°
56°
17
66°
55°
18
65°
54°
19
66°
55°
20
65°
53°
21
66°
54°
22
60°
50°
23
60°
49°
24
60°
49°
25
60°
47°
26
61°
46°
27
63°
47°
28
64°
52°
29
61°
52°
30
61°
51°
31
62°
51°
1
62°
50°
2
58°
49°
3
60°
49°
4
57°
48°
5
59°
47°
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 57° to 71°, with overnight lows between 46° and 56°. The average high for August is 64° with an average low of 52°. 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.