S
M
T
W
T
F
S
30
86°
58°
31
89°
53°
1
80°
54°
2
76°
62°
3
79°
63°
4
87°
52°
5
87°
50°
6
76°
53°
7
76°
59°
8
81°
57°
9
83°
51°
10
75°
56°
11
75°
53°
12
76°
49°
13
74°
49°
14
74°
53°
15
75°
56°
16
75°
59°
17
83°
58°
18
84°
55°
19
83°
54°
20
75°
50°
21
81°
52°
22
73°
47°
23
71°
44°
24
69°
45°
25
71°
44°
26
69°
44°
27
81°
54°
28
69°
48°
29
79°
41°
30
Hist. Avg.
72°
46°
1
Hist. Avg.
71°
45°
2
Hist. Avg.
71°
45°
3
Hist. Avg.
70°
44°
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 69° to 89°, with overnight lows between 41° and 63°. The average high for September is 78° with an average low of 52°. 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.
