S
M
T
W
T
F
S
27
70°
52°
28
72°
52°
29
68°
51°
30
72°
50°
1
66°
45°
2
66°
51°
3
71°
50°
4
72°
48°
5
59°
36°
6
58°
39°
7
61°
45°
8
62°
46°
9
68°
45°
10
67°
46°
11
67°
40°
12
65°
33°
13
60°
31°
14
50°
30°
15
49°
40°
16
53°
42°
17
60°
42°
18
60°
41°
19
59°
43°
20
63°
35°
21
65°
39°
22
60°
29°
23
53°
28°
24
47°
32°
25
58°
32°
26
52°
39°
27
58°
41°
28
59°
40°
29
59°
40°
30
58°
33°
31
56°
26°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Arco
Arco's October 2026 forecast shows daily high temperatures ranging from 47° to 72°, with overnight lows between 26° and 52°. The average high for October is 61° with an average low of 40°. 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 Arco. See also: November | December | January.