S
M
T
W
T
F
S
26
87°
71°
27
101°
80°
28
90°
73°
29
88°
71°
30
89°
74°
31
92°
74°
1
93°
73°
2
93°
74°
3
92°
74°
4
93°
72°
5
93°
72°
6
92°
72°
7
93°
74°
8
93°
73°
9
94°
74°
10
94°
73°
11
91°
72°
12
91°
73°
13
89°
73°
14
88°
70°
15
87°
67°
16
87°
67°
17
88°
69°
18
88°
69°
19
89°
71°
20
90°
72°
21
87°
71°
22
89°
71°
23
91°
72°
24
93°
70°
25
92°
71°
26
89°
70°
27
88°
68°
28
89°
69°
29
93°
68°
30
90°
70°
31
89°
70°
1
89°
69°
2
88°
69°
3
86°
66°
4
86°
62°
5
84°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Rainbow Mountain Heights
Rainbow Mountain Heights's August 2026 forecast shows daily high temperatures ranging from 84° to 101°, with overnight lows between 62° and 80°. The average high for August is 90° with an average low of 71°. 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 Mountain Heights. See also: September | October | November.