S
M
T
W
T
F
S
30
68°
42°
31
69°
45°
1
68°
46°
2
70°
48°
3
67°
48°
4
69°
47°
5
70°
42°
6
69°
45°
7
73°
44°
8
72°
49°
9
73°
49°
10
71°
48°
11
70°
48°
12
70°
50°
13
72°
48°
14
69°
47°
15
69°
50°
16
70°
50°
17
71°
49°
18
68°
46°
19
69°
42°
20
63°
41°
21
59°
41°
22
59°
37°
23
58°
41°
24
60°
40°
25
61°
35°
26
56°
33°
27
53°
39°
28
54°
38°
29
55°
38°
30
55°
36°
1
56°
39°
2
Hist. Avg.
53°
38°
3
Hist. Avg.
52°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Terrace Bay
Terrace Bay's September 2026 forecast shows daily high temperatures ranging from 53° to 73°, with overnight lows between 33° and 50°. The average high for September is 65° with an average low of 44°. 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 Terrace Bay. See also: October | November | December.
