S
M
T
W
T
F
S
30
80°
59°
31
79°
58°
1
80°
56°
2
78°
56°
3
78°
55°
4
79°
57°
5
79°
59°
6
77°
62°
7
83°
55°
8
80°
58°
9
82°
62°
10
83°
63°
11
83°
63°
12
84°
56°
13
83°
55°
14
76°
61°
15
80°
61°
16
80°
60°
17
83°
57°
18
82°
51°
19
74°
59°
20
77°
50°
21
81°
49°
22
72°
48°
23
73°
56°
24
76°
58°
25
Hist. Avg.
73°
52°
26
Hist. Avg.
73°
52°
27
Hist. Avg.
73°
51°
28
Hist. Avg.
72°
51°
29
Hist. Avg.
72°
50°
30
Hist. Avg.
71°
50°
1
Hist. Avg.
71°
49°
2
Hist. Avg.
71°
49°
3
Hist. Avg.
70°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Vandalia
Vandalia's September 2026 forecast shows daily high temperatures ranging from 72° to 84°, with overnight lows between 48° and 63°. The average high for September is 79° with an average low of 57°. 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.
