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°
51°
9
64°
53°
10
68°
55°
11
64°
54°
12
63°
56°
13
70°
57°
14
74°
54°
15
68°
55°
16
70°
57°
17
65°
55°
18
64°
51°
19
61°
52°
20
60°
50°
21
63°
51°
22
59°
50°
23
62°
49°
24
61°
51°
25
63°
50°
26
61°
52°
27
62°
50°
28
61°
49°
29
60°
49°
30
64°
50°
31
59°
49°
1
59°
50°
2
61°
50°
3
63°
49°
4
60°
48°
5
61°
50°
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 59° to 65°, with overnight lows between 48° and 55°. The average high for August is 61° with an average low of 50°. 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.