S
M
T
W
T
F
S
30
69°
52°
31
72°
52°
1
76°
41°
2
75°
41°
3
63°
48°
4
65°
49°
5
67°
45°
6
63°
40°
7
64°
47°
8
72°
50°
9
73°
51°
10
72°
49°
11
71°
45°
12
64°
43°
13
64°
47°
14
67°
46°
15
61°
42°
16
64°
47°
17
68°
46°
18
67°
42°
19
63°
45°
20
66°
38°
21
61°
34°
22
55°
42°
23
59°
45°
24
64°
38°
25
64°
34°
26
54°
40°
27
52°
41°
28
52°
35°
29
53°
39°
30
53°
40°
1
57°
37°
2
56°
36°
3
50°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Shallow Lake
Shallow Lake's September 2026 forecast shows daily high temperatures ranging from 50° to 76°, with overnight lows between 34° and 52°. The average high for September is 63° 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 Shallow Lake. See also: October | November | December.
