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
N/A
11
91°
71°
12
86°
70°
13
90°
71°
14
92°
70°
15
91°
67°
16
88°
64°
17
90°
66°
18
89°
65°
19
86°
61°
20
86°
65°
21
83°
64°
22
84°
62°
23
86°
61°
24
86°
65°
25
84°
62°
26
81°
60°
27
82°
62°
28
85°
63°
29
85°
64°
30
84°
64°
1
83°
63°
2
84°
62°
3
84°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Elgin
Elgin's September 2026 forecast shows daily high temperatures ranging from 81° to 92°, with overnight lows between 60° and 71°. The average high for September is 86° with an average low of 65°. 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.
