S
M
T
W
T
F
S
26
82°
60°
27
85°
66°
28
79°
67°
29
78°
65°
30
82°
59°
31
85°
62°
1
82°
69°
2
80°
68°
3
76°
57°
4
79°
66°
5
84°
69°
6
82°
69°
7
80°
65°
8
82°
66°
9
86°
67°
10
82°
66°
11
82°
66°
12
80°
63°
13
79°
64°
14
79°
63°
15
80°
64°
16
77°
60°
17
83°
66°
18
82°
66°
19
84°
65°
20
80°
65°
21
80°
63°
22
82°
65°
23
83°
66°
24
81°
66°
25
78°
65°
26
81°
65°
27
81°
64°
28
79°
64°
29
78°
63°
30
77°
64°
31
79°
63°
1
81°
62°
2
74°
59°
3
73°
58°
4
74°
60°
5
77°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Vermilion
Vermilion's August 2026 forecast shows daily high temperatures ranging from 73° to 86°, with overnight lows between 57° and 69°. The average high for August is 80° 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 Vermilion. See also: September | October | November.