S
M
T
W
T
F
S
30
77°
61°
31
80°
62°
1
80°
61°
2
79°
61°
3
80°
55°
4
74°
53°
5
73°
57°
6
74°
60°
7
79°
61°
8
79°
60°
9
77°
57°
10
73°
59°
11
78°
58°
12
78°
59°
13
77°
59°
14
78°
58°
15
78°
58°
16
77°
57°
17
75°
57°
18
77°
50°
19
69°
49°
20
70°
47°
21
68°
47°
22
68°
49°
23
70°
51°
24
70°
47°
25
67°
47°
26
68°
53°
27
67°
52°
28
72°
53°
29
73°
52°
30
73°
53°
1
70°
51°
2
72°
51°
3
66°
51°
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 66° to 80°, with overnight lows between 47° and 62°. The average high for September is 74° 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 Vandalia. See also: October | November | December.
