S
M
T
W
T
F
S
28
83°
58°
29
86°
64°
30
89°
71°
1
94°
72°
2
97°
73°
3
94°
66°
4
88°
65°
5
86°
62°
6
85°
61°
7
83°
61°
8
82°
62°
9
84°
60°
10
83°
61°
11
84°
57°
12
77°
60°
13
76°
54°
14
75°
53°
15
75°
53°
16
76°
55°
17
77°
55°
18
77°
58°
19
78°
61°
20
82°
61°
21
81°
62°
22
84°
62°
23
79°
61°
24
83°
62°
25
84°
62°
26
85°
63°
27
85°
63°
28
84°
62°
29
84°
61°
30
80°
56°
31
75°
55°
1
75°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Marathon
Marathon's July 2026 forecast shows daily high temperatures ranging from 75° to 97°, with overnight lows between 53° and 73°. The average high for July is 83° with an average low of 61°. 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 Marathon. See also: August | September | October.
