S
M
T
W
T
F
S
30
87°
67°
31
90°
68°
1
93°
70°
2
85°
67°
3
82°
67°
4
83°
65°
5
79°
63°
6
78°
61°
7
78°
64°
8
81°
68°
9
82°
61°
10
74°
57°
11
71°
57°
12
73°
56°
13
71°
55°
14
69°
56°
15
72°
51°
16
77°
57°
17
75°
56°
18
71°
55°
19
73°
56°
20
75°
56°
21
74°
55°
22
73°
53°
23
72°
53°
24
72°
52°
25
71°
53°
26
71°
49°
27
62°
46°
28
60°
42°
29
61°
44°
30
61°
40°
1
60°
50°
2
61°
50°
3
62°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Road America
Road America's September 2026 forecast shows daily high temperatures ranging from 60° to 85°, with overnight lows between 40° and 68°. The average high for September is 72° with an average low of 55°. 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 Road America. See also: October | November | December.
