S
M
T
W
T
F
S
27
70°
57°
28
71°
56°
29
73°
55°
30
70°
45°
1
72°
43°
2
64°
42°
3
63°
41°
4
62°
41°
5
61°
42°
6
63°
44°
7
64°
49°
8
68°
48°
9
67°
41°
10
62°
39°
11
61°
43°
12
62°
48°
13
60°
48°
14
67°
43°
15
66°
46°
16
Hist. Avg.
63°
43°
17
Hist. Avg.
62°
42°
18
Hist. Avg.
62°
42°
19
Hist. Avg.
62°
41°
20
Hist. Avg.
61°
41°
21
Hist. Avg.
61°
40°
22
Hist. Avg.
60°
40°
23
Hist. Avg.
60°
40°
24
Hist. Avg.
59°
39°
25
Hist. Avg.
59°
39°
26
Hist. Avg.
58°
38°
27
Hist. Avg.
58°
38°
28
Hist. Avg.
57°
38°
29
Hist. Avg.
57°
37°
30
Hist. Avg.
56°
37°
31
Hist. Avg.
56°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Galesburg
Galesburg's October 2026 forecast shows daily high temperatures ranging from 60° to 73°, with overnight lows between 39° and 57°. The average high for October is 66° with an average low of 46°. 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 Galesburg. See also: November | December | January.