S
M
T
W
T
F
S
27
87°
80°
28
88°
80°
29
89°
79°
30
88°
80°
1
87°
80°
2
87°
79°
3
86°
79°
4
86°
78°
5
87°
80°
6
86°
79°
7
85°
79°
8
84°
78°
9
85°
78°
10
85°
79°
11
86°
78°
12
87°
78°
13
87°
77°
14
87°
77°
15
86°
76°
16
85°
77°
17
86°
76°
18
87°
76°
19
86°
75°
20
86°
74°
21
85°
74°
22
86°
75°
23
87°
76°
24
86°
76°
25
86°
75°
26
85°
76°
27
86°
76°
28
86°
75°
29
85°
76°
30
86°
76°
31
86°
72°
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 84° to 89°, with overnight lows between 72° and 80°. The average high for October is 86° with an average low of 77°. 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.
