S
M
T
W
T
F
S
30
76°
40°
31
68°
36°
1
59°
39°
2
62°
41°
3
63°
41°
4
70°
47°
5
73°
49°
6
71°
42°
7
70°
39°
8
61°
40°
9
64°
41°
10
64°
45°
11
61°
38°
12
62°
33°
13
57°
40°
14
57°
46°
15
64°
44°
16
66°
38°
17
56°
43°
18
64°
38°
19
65°
33°
20
54°
29°
21
52°
31°
22
51°
31°
23
50°
28°
24
49°
35°
25
51°
38°
26
53°
37°
27
51°
37°
28
52°
39°
29
50°
32°
30
51°
30°
1
52°
35°
2
54°
37°
3
56°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Shell Lake
Shell Lake's September 2026 forecast shows daily high temperatures ranging from 49° to 76°, with overnight lows between 28° and 49°. The average high for September is 59° with an average low of 38°. 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 Shell Lake. See also: October | November | December.
