S
M
T
W
T
F
S
30
86°
65°
31
91°
73°
1
93°
74°
2
96°
73°
3
97°
75°
4
84°
72°
5
83°
69°
6
80°
62°
7
82°
61°
8
86°
65°
9
91°
70°
10
83°
68°
11
81°
66°
12
78°
67°
13
82°
61°
14
75°
59°
15
87°
66°
16
85°
67°
17
81°
65°
18
76°
57°
19
71°
54°
20
69°
50°
21
70°
52°
22
75°
54°
23
76°
55°
24
75°
51°
25
74°
56°
26
78°
56°
27
78°
56°
28
77°
56°
29
75°
55°
30
76°
55°
1
73°
52°
2
69°
54°
3
76°
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 69° to 87°, with overnight lows between 50° and 67°. The average high for September is 76° with an average low of 57°. 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.
