S
M
T
W
T
F
S
30
64°
54°
31
60°
53°
1
61°
50°
2
60°
52°
3
60°
53°
4
61°
52°
5
61°
52°
6
63°
53°
7
63°
53°
8
62°
52°
9
63°
52°
10
63°
53°
11
62°
52°
12
61°
52°
13
61°
50°
14
60°
50°
15
61°
51°
16
62°
50°
17
61°
46°
18
61°
47°
19
61°
48°
20
60°
48°
21
62°
47°
22
60°
48°
23
61°
46°
24
61°
48°
25
60°
47°
26
60°
47°
27
58°
49°
28
59°
49°
29
58°
48°
30
59°
50°
1
60°
49°
2
60°
47°
3
58°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Elgin
Elgin's September 2026 forecast shows daily high temperatures ranging from 58° to 64°, with overnight lows between 46° and 54°. The average high for September is 61° 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 Elgin. See also: October | November | December.
