S
M
T
W
T
F
S
30
72°
52°
31
73°
51°
1
73°
52°
2
74°
52°
3
73°
53°
4
74°
51°
5
75°
54°
6
74°
55°
7
72°
54°
8
73°
50°
9
71°
51°
10
71°
49°
11
72°
48°
12
71°
48°
13
72°
53°
14
71°
51°
15
76°
54°
16
77°
56°
17
76°
55°
18
77°
50°
19
76°
45°
20
69°
46°
21
67°
52°
22
68°
51°
23
71°
52°
24
72°
53°
25
73°
44°
26
72°
41°
27
65°
42°
28
62°
43°
29
63°
43°
30
63°
41°
1
Hist. Avg.
68°
44°
2
Hist. Avg.
68°
44°
3
Hist. Avg.
68°
44°
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 56°. The average high for September is 72° with an average low of 50°. 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.
