S
M
T
W
T
F
S
30
72°
52°
31
63°
51°
1
63°
48°
2
62°
47°
3
61°
43°
4
60°
44°
5
59°
46°
6
60°
39°
7
60°
36°
8
58°
38°
9
59°
35°
10
58°
34°
11
55°
36°
12
56°
35°
13
55°
37°
14
58°
41°
15
66°
46°
16
68°
46°
17
69°
45°
18
70°
46°
19
70°
48°
20
69°
47°
21
67°
47°
22
67°
45°
23
65°
39°
24
63°
40°
25
64°
40°
26
64°
41°
27
62°
39°
28
60°
38°
29
60°
41°
30
61°
39°
1
62°
40°
2
61°
39°
3
63°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Vermilion
Vermilion's September 2026 forecast shows daily high temperatures ranging from 55° to 72°, with overnight lows between 34° and 52°. The average high for September is 63° with an average low of 42°. 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 Vermilion. See also: October | November | December.
