S
M
T
W
T
F
S
30
89°
61°
31
91°
69°
1
94°
71°
2
96°
71°
3
97°
72°
4
95°
69°
5
90°
66°
6
87°
62°
7
84°
63°
8
87°
67°
9
89°
69°
10
88°
65°
11
82°
64°
12
81°
61°
13
81°
61°
14
80°
60°
15
79°
55°
16
79°
60°
17
80°
59°
18
74°
59°
19
72°
60°
20
74°
59°
21
78°
59°
22
79°
57°
23
76°
54°
24
73°
56°
25
79°
58°
26
75°
51°
27
68°
47°
28
67°
45°
29
66°
45°
30
67°
47°
1
66°
45°
2
67°
52°
3
69°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Ellettsville
Ellettsville's September 2026 forecast shows daily high temperatures ranging from 66° to 97°, with overnight lows between 45° and 72°. The average high for September is 79° with an average low of 58°. 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 Ellettsville. See also: October | November | December.
