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
63°
54°
18
63°
54°
19
58°
50°
20
61°
52°
21
62°
54°
22
57°
52°
23
63°
48°
24
64°
47°
25
65°
55°
26
63°
47°
27
63°
44°
28
67°
50°
29
64°
49°
30
58°
41°
31
58°
40°
1
N/A
2
62°
43°
3
63°
49°
4
63°
53°
5
65°
49°
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 62° to 65°, with overnight lows between 43° and 53°. The average high for August is 63° with an average low of 49°. 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.