S
M
T
W
T
F
S
30
81°
61°
31
84°
65°
1
86°
66°
2
87°
66°
3
87°
60°
4
85°
57°
5
79°
57°
6
79°
62°
7
82°
61°
8
83°
62°
9
84°
63°
10
79°
62°
11
84°
61°
12
84°
63°
13
83°
62°
14
83°
63°
15
84°
62°
16
84°
61°
17
83°
62°
18
82°
56°
19
81°
54°
20
77°
51°
21
74°
51°
22
73°
57°
23
76°
55°
24
79°
51°
25
73°
50°
26
74°
51°
27
73°
50°
28
77°
55°
29
78°
56°
30
78°
55°
1
77°
56°
2
76°
53°
3
71°
54°
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 71° to 87°, with overnight lows between 50° and 66°. The average high for September is 80° with an average low of 58°. 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.
