S
M
T
W
T
F
S
27
74°
47°
28
58°
44°
29
67°
36°
30
63°
44°
1
71°
38°
2
66°
43°
3
72°
40°
4
57°
38°
5
66°
41°
6
61°
41°
7
55°
40°
8
57°
40°
9
68°
41°
10
67°
40°
11
68°
41°
12
68°
39°
13
53°
32°
14
49°
32°
15
50°
33°
16
51°
33°
17
49°
32°
18
50°
28°
19
56°
35°
20
55°
34°
21
56°
32°
22
62°
37°
23
62°
36°
24
61°
35°
25
60°
36°
26
61°
36°
27
62°
29°
28
61°
23°
29
51°
28°
30
54°
26°
31
48°
22°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Keystone
Keystone's October 2026 forecast shows daily high temperatures ranging from 48° to 74°, with overnight lows between 22° and 47°. The average high for October is 60° with an average low of 36°. 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 Keystone. See also: November | December | January.
