S
M
T
W
T
F
S
26
77°
65°
27
76°
65°
28
80°
64°
29
79°
65°
30
79°
65°
31
78°
66°
1
77°
65°
2
76°
66°
3
81°
67°
4
80°
66°
5
76°
65°
6
77°
65°
7
80°
64°
8
79°
61°
9
74°
58°
10
74°
58°
11
75°
64°
12
74°
65°
13
77°
65°
14
79°
64°
15
78°
63°
16
76°
64°
17
76°
56°
18
76°
56°
19
80°
62°
20
82°
64°
21
78°
63°
22
79°
62°
23
81°
63°
24
80°
62°
25
75°
62°
26
74°
58°
27
74°
58°
28
73°
61°
29
74°
60°
30
77°
61°
31
80°
62°
1
80°
61°
2
79°
61°
3
80°
55°
4
74°
53°
5
73°
57°
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 73° to 82°, with overnight lows between 53° and 67°. The average high for August is 77° with an average low of 62°. 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.
