S
M
T
W
T
F
S
26
95°
77°
27
96°
78°
28
96°
77°
29
95°
78°
30
96°
77°
31
95°
76°
1
93°
75°
2
88°
75°
3
88°
74°
4
89°
75°
5
90°
76°
6
91°
75°
7
90°
75°
8
91°
74°
9
91°
75°
10
93°
75°
11
92°
74°
12
91°
74°
13
91°
75°
14
93°
74°
15
94°
74°
16
93°
71°
17
88°
73°
18
93°
74°
19
90°
70°
20
92°
67°
21
87°
66°
22
86°
66°
23
87°
67°
24
87°
66°
25
88°
66°
26
89°
67°
27
92°
67°
28
94°
72°
29
94°
72°
30
93°
71°
31
94°
73°
1
94°
72°
2
92°
70°
3
91°
66°
4
88°
68°
5
91°
70°
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 86° to 96°, with overnight lows between 66° and 78°. The average high for August is 91° with an average low of 72°. 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.