S
M
T
W
T
F
S
27
39°
32°
28
40°
28°
29
40°
25°
30
39°
24°
1
36°
23°
2
34°
24°
3
34°
24°
4
35°
23°
5
33°
22°
6
32°
25°
7
33°
32°
8
36°
31°
9
37°
26°
10
37°
27°
11
34°
24°
12
35°
26°
13
33°
20°
14
35°
16°
15
28°
13°
16
24°
11°
17
20°
9°
18
19°
11°
19
20°
12°
20
20°
12°
21
21°
13°
22
20°
18°
23
22°
22°
24
27°
6°
25
29°
24°
26
33°
21°
27
33°
19°
28
30°
18°
29
26°
6°
30
26°
3°
31
19°
5°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Galena
Galena's October 2026 forecast shows daily high temperatures ranging from 19° to 40°, with overnight lows between 3° and 32°. The average high for October is 30° with an average low of 19°. 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 Galena. See also: November | December | January.