S
M
T
W
T
F
S
27
90°
64°
28
91°
60°
29
85°
65°
30
84°
66°
1
77°
57°
2
65°
58°
3
71°
57°
4
72°
57°
5
75°
61°
6
79°
61°
7
84°
56°
8
79°
58°
9
80°
52°
10
83°
54°
11
85°
60°
12
90°
66°
13
91°
66°
14
75°
61°
15
76°
56°
16
56°
44°
17
56°
38°
18
70°
39°
19
77°
49°
20
82°
54°
21
83°
55°
22
83°
55°
23
80°
56°
24
76°
61°
25
73°
59°
26
71°
54°
27
77°
55°
28
80°
57°
29
69°
58°
30
73°
58°
31
73°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Marathon
Marathon's October 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for October is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Marathon. See also: November | December | January.