S
M
T
W
T
F
S
30
89°
72°
31
94°
70°
1
97°
72°
2
98°
72°
3
98°
72°
4
97°
71°
5
100°
72°
6
96°
69°
7
89°
70°
8
90°
68°
9
92°
67°
10
94°
69°
11
97°
74°
12
92°
73°
13
94°
72°
14
96°
70°
15
91°
71°
16
90°
67°
17
92°
61°
18
95°
66°
19
91°
70°
20
92°
69°
21
96°
68°
22
91°
69°
23
72°
62°
24
66°
58°
25
77°
52°
26
82°
47°
27
83°
50°
28
85°
52°
29
87°
55°
30
89°
58°
1
90°
57°
2
91°
64°
3
89°
72°
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 ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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.
