S
M
T
W
T
F
S
30
70°
50°
31
70°
50°
1
71°
57°
2
71°
58°
3
74°
58°
4
79°
57°
5
79°
55°
6
73°
48°
7
69°
48°
8
71°
51°
9
72°
47°
10
69°
48°
11
69°
48°
12
70°
47°
13
71°
54°
14
76°
54°
15
68°
52°
16
67°
50°
17
66°
52°
18
67°
51°
19
70°
44°
20
65°
47°
21
68°
43°
22
67°
43°
23
65°
42°
24
64°
42°
25
65°
48°
26
67°
41°
27
63°
49°
28
68°
47°
29
66°
40°
30
61°
44°
1
64°
47°
2
69°
45°
3
66°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lanesboro
Lanesboro's September 2026 forecast shows daily high temperatures ranging from 61° to 79°, with overnight lows between 39° and 58°. The average high for September is 69° with an average low of 48°. 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 Lanesboro. See also: October | November | December.