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°
70°
11
82°
67°
12
81°
66°
13
85°
61°
14
80°
65°
15
90°
69°
16
85°
67°
17
81°
65°
18
76°
57°
19
75°
51°
20
74°
54°
21
72°
52°
22
73°
54°
23
72°
52°
24
79°
56°
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 90°, with overnight lows between 51° and 69°. The average high for September is 77° 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.
