S
M
T
W
T
F
S
27
72°
46°
28
76°
46°
29
74°
34°
30
67°
35°
1
63°
38°
2
66°
41°
3
70°
36°
4
70°
41°
5
69°
39°
6
68°
41°
7
73°
40°
8
71°
39°
9
62°
35°
10
66°
35°
11
60°
39°
12
68°
42°
13
72°
44°
14
74°
39°
15
72°
31°
16
59°
32°
17
58°
28°
18
56°
37°
19
65°
44°
20
69°
40°
21
69°
33°
22
61°
25°
23
54°
27°
24
55°
32°
25
58°
26°
26
54°
25°
27
51°
25°
28
53°
29°
29
55°
34°
30
58°
32°
31
53°
25°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Fort Collins
Fort Collins's October 2026 forecast shows daily high temperatures ranging from 51° to 76°, with overnight lows between 25° and 46°. The average high for October is 64° with an average low of 35°. 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 Fort Collins. See also: November | December | January.