S
M
T
W
T
F
S
30
74°
48°
31
67°
50°
1
68°
49°
2
67°
44°
3
68°
47°
4
73°
53°
5
71°
44°
6
67°
42°
7
66°
43°
8
65°
42°
9
63°
41°
10
64°
41°
11
64°
44°
12
71°
46°
13
73°
47°
14
72°
49°
15
73°
50°
16
72°
41°
17
65°
39°
18
61°
39°
19
64°
38°
20
67°
45°
21
68°
39°
22
59°
42°
23
62°
47°
24
58°
45°
25
57°
43°
26
56°
44°
27
55°
40°
28
54°
35°
29
54°
40°
30
56°
45°
1
55°
42°
2
55°
36°
3
56°
34°
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 54° to 74°, with overnight lows between 34° and 53°. The average high for September is 64° 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 September weather will actually feel in Galena. See also: October | November | December.
