S
M
T
W
T
F
S
30
74°
49°
31
73°
48°
1
72°
50°
2
73°
51°
3
71°
53°
4
72°
50°
5
73°
50°
6
72°
49°
7
72°
47°
8
73°
46°
9
71°
54°
10
72°
48°
11
71°
46°
12
71°
46°
13
72°
51°
14
76°
50°
15
72°
52°
16
77°
53°
17
77°
52°
18
75°
48°
19
75°
52°
20
74°
45°
21
68°
47°
22
68°
50°
23
69°
50°
24
72°
51°
25
73°
47°
26
72°
42°
27
70°
42°
28
63°
43°
29
62°
43°
30
63°
41°
1
63°
43°
2
Hist. Avg.
64°
40°
3
Hist. Avg.
63°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Vandalia
Vandalia's September 2026 forecast shows daily high temperatures ranging from 62° to 77°, with overnight lows between 41° and 54°. The average high for September is 71° with an average low of 48°. 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 Vandalia. See also: October | November | December.
