S
M
T
W
T
F
S
26
72°
42°
27
79°
47°
28
82°
48°
29
82°
48°
30
82°
49°
31
82°
48°
1
82°
47°
2
81°
47°
3
82°
48°
4
82°
47°
5
81°
47°
6
81°
46°
7
82°
47°
8
81°
47°
9
82°
48°
10
77°
36°
11
72°
37°
12
70°
36°
13
73°
40°
14
75°
38°
15
76°
39°
16
75°
39°
17
76°
35°
18
72°
38°
19
79°
44°
20
82°
45°
21
81°
46°
22
82°
42°
23
81°
36°
24
71°
32°
25
70°
33°
26
73°
38°
27
79°
39°
28
80°
43°
29
79°
39°
30
79°
41°
31
71°
42°
1
69°
38°
2
70°
35°
3
69°
37°
4
66°
35°
5
67°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Marion
Marion's August 2026 forecast shows daily high temperatures ranging from 66° to 82°, with overnight lows between 32° and 49°. The average high for August is 77° with an average low of 42°. 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 Marion. See also: September | October | November.
