S
M
T
W
T
F
S
30
81°
62°
31
83°
62°
1
85°
61°
2
82°
58°
3
79°
57°
4
80°
60°
5
84°
60°
6
84°
59°
7
83°
61°
8
85°
61°
9
85°
60°
10
83°
58°
11
83°
60°
12
84°
61°
13
84°
61°
14
78°
49°
15
72°
51°
16
73°
57°
17
74°
53°
18
72°
47°
19
71°
48°
20
73°
47°
21
75°
51°
22
78°
53°
23
79°
45°
24
71°
45°
25
69°
53°
26
74°
53°
27
77°
52°
28
77°
44°
29
68°
43°
30
67°
42°
1
67°
47°
2
74°
49°
3
75°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Elwood
Elwood's September 2026 forecast shows daily high temperatures ranging from 67° to 85°, with overnight lows between 42° and 62°. The average high for September is 77° 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 September weather will actually feel in Elwood. See also: October | November | December.