S
M
T
W
T
F
S
30
84°
62°
31
85°
60°
1
84°
59°
2
83°
59°
3
83°
60°
4
82°
58°
5
81°
59°
6
82°
60°
7
82°
61°
8
81°
60°
9
79°
59°
10
79°
59°
11
81°
60°
12
84°
61°
13
85°
62°
14
85°
59°
15
80°
59°
16
78°
57°
17
81°
57°
18
84°
58°
19
85°
60°
20
84°
61°
21
84°
62°
22
85°
61°
23
85°
62°
24
83°
59°
25
75°
55°
26
72°
54°
27
73°
56°
28
74°
57°
29
78°
55°
30
75°
54°
1
70°
53°
2
69°
54°
3
78°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Wheaton Springs
Wheaton Springs's September 2026 forecast shows daily high temperatures ranging from 69° to 85°, with overnight lows between 53° and 62°. The average high for September is 80° 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 Wheaton Springs. See also: October | November | December.