S
M
T
W
T
F
S
30
55°
41°
31
53°
36°
1
50°
31°
2
52°
32°
3
51°
39°
4
56°
48°
5
59°
47°
6
57°
48°
7
57°
49°
8
60°
48°
9
52°
46°
10
56°
48°
11
57°
49°
12
55°
47°
13
56°
46°
14
58°
37°
15
59°
46°
16
53°
45°
17
50°
42°
18
49°
43°
19
46°
39°
20
44°
35°
21
44°
31°
22
45°
35°
23
48°
36°
24
50°
35°
25
53°
32°
26
51°
32°
27
49°
33°
28
47°
33°
29
39°
28°
30
37°
26°
1
38°
25°
2
37°
28°
3
37°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Galena
Galena's September 2026 forecast shows daily high temperatures ranging from 37° to 51°, with overnight lows between 25° and 33°. The average high for September is 42° with an average low of 29°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Galena. See also: October | November | December.
