S
M
T
W
T
F
S
26
97°
79°
27
97°
79°
28
90°
75°
29
84°
66°
30
N/A
31
86°
65°
1
71°
62°
2
80°
60°
3
83°
61°
4
83°
64°
5
81°
65°
6
84°
66°
7
89°
67°
8
92°
69°
9
91°
67°
10
88°
63°
11
90°
66°
12
85°
64°
13
86°
65°
14
82°
64°
15
81°
63°
16
84°
68°
17
88°
68°
18
89°
67°
19
82°
63°
20
81°
63°
21
81°
66°
22
85°
65°
23
81°
62°
24
82°
64°
25
82°
59°
26
80°
58°
27
79°
60°
28
83°
62°
29
82°
63°
30
77°
66°
31
79°
66°
1
82°
64°
2
81°
62°
3
80°
61°
4
81°
61°
5
81°
60°
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 71° to 92°, with overnight lows between 58° and 69°. The average high for August is 83° with an average low of 64°. 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.
