S
M
T
W
T
F
S
27
68°
60°
28
78°
59°
29
83°
59°
30
80°
67°
1
72°
56°
2
70°
49°
3
74°
45°
4
78°
49°
5
75°
45°
6
81°
46°
7
85°
55°
8
82°
49°
9
86°
57°
10
86°
57°
11
88°
56°
12
89°
68°
13
88°
64°
14
66°
58°
15
71°
51°
16
53°
42°
17
59°
32°
18
67°
34°
19
70°
38°
20
73°
40°
21
74°
49°
22
77°
46°
23
78°
49°
24
79°
51°
25
78°
52°
26
78°
55°
27
67°
57°
28
73°
58°
29
76°
58°
30
72°
56°
31
63°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Gallatin
Gallatin's October 2026 forecast shows daily high temperatures ranging from 63° to 78°, with overnight lows between 52° and 58°. The average high for October is 72° with an average low of 56°. 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 Gallatin. See also: November | December | January.