S
M
T
W
T
F
S
27
N/A
28
71°
55°
29
75°
55°
30
78°
51°
1
86°
65°
2
74°
52°
3
69°
54°
4
69°
47°
5
67°
39°
6
65°
42°
7
72°
52°
8
76°
51°
9
71°
45°
10
65°
47°
11
67°
46°
12
68°
47°
13
65°
45°
14
68°
44°
15
60°
39°
16
69°
49°
17
70°
48°
18
69°
49°
19
70°
45°
20
62°
39°
21
57°
40°
22
57°
37°
23
58°
39°
24
68°
44°
25
69°
46°
26
68°
36°
27
55°
34°
28
58°
34°
29
62°
39°
30
59°
36°
31
63°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Marietta
Marietta's October 2026 forecast shows daily high temperatures ranging from 55° to 86°, with overnight lows between 34° and 65°. The average high for October is 66° with an average low of 44°. 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 Marietta. See also: November | December | January.
