S
M
T
W
T
F
S
26
96°
76°
27
95°
79°
28
97°
79°
29
93°
77°
30
91°
73°
31
89°
73°
1
83°
73°
2
81°
69°
3
88°
67°
4
90°
68°
5
93°
65°
6
95°
69°
7
94°
73°
8
88°
75°
9
94°
73°
10
95°
75°
11
96°
74°
12
97°
76°
13
98°
77°
14
98°
77°
15
99°
73°
16
101°
77°
17
96°
76°
18
93°
73°
19
95°
77°
20
95°
73°
21
92°
69°
22
93°
71°
23
92°
73°
24
87°
74°
25
91°
71°
26
92°
68°
27
90°
67°
28
90°
68°
29
91°
68°
30
91°
69°
31
92°
69°
1
89°
68°
2
84°
71°
3
84°
65°
4
92°
72°
5
91°
71°
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 84° to 95°, with overnight lows between 65° and 77°. The average high for August is 91° with an average low of 70°. 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.