S
M
T
W
T
F
S
28
85°
69°
29
91°
72°
30
92°
76°
1
92°
74°
2
92°
74°
3
93°
74°
4
89°
71°
5
83°
69°
6
80°
69°
7
85°
65°
8
87°
61°
9
86°
65°
10
84°
69°
11
80°
64°
12
85°
60°
13
87°
65°
14
89°
67°
15
89°
68°
16
87°
70°
17
88°
68°
18
87°
63°
19
84°
60°
20
82°
62°
21
82°
63°
22
84°
62°
23
83°
61°
24
88°
68°
25
87°
68°
26
88°
67°
27
88°
67°
28
86°
66°
29
85°
66°
30
82°
65°
31
79°
65°
1
79°
64°
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 89°, with overnight lows between 60° and 70°. The average high for July is 85° with an average low of 65°. 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.