S
M
T
W
T
F
S
27
78°
47°
28
78°
47°
29
76°
46°
30
76°
46°
1
75°
45°
2
74°
46°
3
72°
45°
4
69°
44°
5
62°
44°
6
68°
43°
7
71°
43°
8
65°
42°
9
68°
39°
10
57°
32°
11
63°
41°
12
69°
28°
13
65°
25°
14
55°
25°
15
51°
23°
16
53°
25°
17
52°
26°
18
54°
28°
19
55°
32°
20
56°
27°
21
54°
25°
22
51°
26°
23
51°
25°
24
52°
24°
25
49°
20°
26
48°
25°
27
49°
28°
28
50°
24°
29
50°
28°
30
51°
24°
31
51°
19°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Roundup
Roundup's October 2026 forecast shows daily high temperatures ranging from 48° to 78°, with overnight lows between 19° and 47°. The average high for October is 61° with an average low of 33°. 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 Roundup. See also: November | December | January.
