S
M
T
W
T
F
S
26
77°
60°
27
77°
60°
28
76°
59°
29
79°
60°
30
75°
60°
31
78°
59°
1
80°
59°
2
79°
60°
3
77°
60°
4
79°
58°
5
73°
56°
6
77°
58°
7
78°
58°
8
74°
52°
9
72°
51°
10
72°
52°
11
73°
56°
12
73°
53°
13
75°
59°
14
76°
60°
15
79°
58°
16
72°
54°
17
73°
51°
18
73°
50°
19
74°
57°
20
76°
56°
21
74°
52°
22
75°
49°
23
75°
49°
24
72°
48°
25
72°
49°
26
75°
48°
27
73°
49°
28
73°
50°
29
77°
55°
30
77°
55°
31
76°
54°
1
78°
56°
2
78°
52°
3
76°
47°
4
69°
44°
5
68°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Indian River
Indian River's August 2026 forecast shows daily high temperatures ranging from 68° to 80°, with overnight lows between 44° and 60°. The average high for August is 75° with an average low of 54°. 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 Indian River. See also: September | October | November.