S
M
T
W
T
F
S
30
75°
54°
31
75°
55°
1
74°
56°
2
74°
54°
3
75°
55°
4
80°
59°
5
76°
59°
6
73°
57°
7
79°
54°
8
77°
61°
9
76°
62°
10
80°
57°
11
76°
52°
12
72°
51°
13
70°
50°
14
68°
49°
15
68°
49°
16
67°
51°
17
69°
50°
18
70°
56°
19
74°
50°
20
75°
48°
21
70°
47°
22
65°
46°
23
74°
56°
24
74°
55°
25
Hist. Avg.
68°
49°
26
Hist. Avg.
68°
48°
27
Hist. Avg.
67°
48°
28
Hist. Avg.
67°
47°
29
Hist. Avg.
66°
47°
30
Hist. Avg.
66°
47°
1
Hist. Avg.
66°
46°
2
Hist. Avg.
65°
46°
3
Hist. Avg.
65°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Vermillion
Vermillion's September 2026 forecast shows daily high temperatures ranging from 65° to 80°, with overnight lows between 46° and 62°. The average high for September is 73° with an average low of 54°. 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 Vermillion. See also: October | November | December.
