S
M
T
W
T
F
S
27
61°
37°
28
58°
32°
29
57°
33°
30
56°
34°
1
52°
30°
2
56°
27°
3
54°
27°
4
52°
26°
5
46°
21°
6
44°
19°
7
45°
18°
8
45°
20°
9
46°
22°
10
44°
18°
11
43°
20°
12
43°
18°
13
44°
19°
14
41°
18°
15
41°
16°
16
42°
16°
17
42°
22°
18
41°
25°
19
42°
27°
20
43°
24°
21
39°
20°
22
39°
24°
23
38°
17°
24
40°
14°
25
45°
17°
26
48°
21°
27
44°
19°
28
42°
14°
29
43°
24°
30
35°
15°
31
34°
12°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Big Sky
Big Sky's October 2026 forecast shows daily high temperatures ranging from 34° to 61°, with overnight lows between 12° and 37°. The average high for October is 45° with an average low of 22°. 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 Big Sky. See also: November | December | January.
