S
M
T
W
T
F
S
26
83°
64°
27
84°
65°
28
83°
64°
29
84°
65°
30
82°
64°
31
83°
63°
1
77°
60°
2
76°
59°
3
76°
61°
4
78°
63°
5
80°
63°
6
82°
62°
7
83°
63°
8
83°
63°
9
82°
64°
10
83°
63°
11
83°
63°
12
82°
62°
13
84°
64°
14
85°
59°
15
84°
61°
16
76°
62°
17
81°
59°
18
83°
61°
19
82°
55°
20
78°
52°
21
75°
52°
22
75°
54°
23
76°
54°
24
75°
52°
25
75°
58°
26
76°
56°
27
81°
54°
28
81°
53°
29
74°
52°
30
72°
52°
31
73°
51°
1
73°
52°
2
74°
52°
3
73°
53°
4
74°
51°
5
75°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Vandalia
Vandalia's August 2026 forecast shows daily high temperatures ranging from 72° to 85°, with overnight lows between 51° and 65°. The average high for August is 79° with an average low of 58°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Vandalia. See also: September | October | November.
