S
M
T
W
T
F
S
30
64°
59°
31
79°
55°
1
83°
57°
2
74°
55°
3
70°
60°
4
69°
59°
5
73°
58°
6
78°
59°
7
70°
55°
8
69°
56°
9
70°
54°
10
72°
56°
11
69°
50°
12
68°
50°
13
67°
51°
14
68°
50°
15
72°
55°
16
71°
54°
17
70°
55°
18
70°
55°
19
67°
54°
20
71°
54°
21
71°
55°
22
70°
54°
23
70°
54°
24
71°
55°
25
71°
54°
26
70°
53°
27
71°
54°
28
71°
52°
29
68°
52°
30
67°
52°
1
69°
53°
2
69°
51°
3
66°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Two Harbors
Two Harbors's September 2026 forecast shows daily high temperatures ranging from 66° to 83°, with overnight lows between 50° and 60°. The average high for September is 70° with an average low of 54°. 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 Two Harbors. See also: October | November | December.