S
M
T
W
T
F
S
27
73°
45°
28
75°
46°
29
77°
48°
30
66°
59°
1
64°
54°
2
66°
41°
3
70°
41°
4
70°
43°
5
70°
41°
6
73°
48°
7
75°
52°
8
71°
47°
9
68°
56°
10
82°
52°
11
77°
57°
12
81°
55°
13
64°
48°
14
59°
53°
15
63°
48°
16
55°
41°
17
53°
39°
18
54°
42°
19
57°
43°
20
58°
42°
21
56°
37°
22
57°
42°
23
49°
36°
24
56°
42°
25
59°
41°
26
56°
38°
27
56°
32°
28
46°
29°
29
48°
39°
30
52°
37°
31
57°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in South Beloit
South Beloit's October 2026 forecast shows daily high temperatures ranging from 46° to 82°, with overnight lows between 29° and 57°. The average high for October is 60° with an average low of 43°. 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 South Beloit. See also: November | December | January.