S
M
T
W
T
F
S
28
92°
77°
29
94°
73°
30
95°
74°
1
97°
73°
2
98°
72°
3
97°
69°
4
93°
67°
5
92°
70°
6
91°
70°
7
88°
73°
8
88°
71°
9
91°
70°
10
89°
72°
11
89°
70°
12
79°
69°
13
82°
69°
14
84°
69°
15
88°
71°
16
90°
70°
17
91°
72°
18
90°
73°
19
89°
68°
20
85°
70°
21
85°
66°
22
84°
67°
23
86°
68°
24
90°
67°
25
91°
70°
26
91°
71°
27
90°
71°
28
89°
70°
29
85°
68°
30
87°
71°
31
90°
70°
1
88°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Marion
Marion's July 2026 forecast shows daily high temperatures ranging from 79° to 91°, with overnight lows between 66° and 73°. The average high for July is 87° 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 July weather will actually feel in Marion. See also: August | September | October.