S
M
T
W
T
F
S
30
72°
63°
31
81°
65°
1
88°
61°
2
80°
58°
3
78°
54°
4
71°
55°
5
N/A
6
78°
50°
7
80°
59°
8
76°
65°
9
80°
56°
10
69°
48°
11
71°
53°
12
74°
56°
13
69°
51°
14
69°
49°
15
67°
50°
16
68°
47°
17
67°
48°
18
68°
49°
19
69°
44°
20
73°
52°
21
62°
49°
22
66°
49°
23
67°
48°
24
68°
50°
25
71°
49°
26
67°
48°
27
67°
49°
28
70°
50°
29
70°
50°
30
71°
51°
1
70°
47°
2
69°
45°
3
57°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Indian River
Indian River's September 2026 forecast shows daily high temperatures ranging from 57° to 80°, with overnight lows between 44° and 65°. The average high for September is 70° 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 September weather will actually feel in Indian River. See also: October | November | December.
