S
M
T
W
T
F
S
31
69°
48°
1
69°
49°
2
69°
57°
3
62°
39°
4
47°
39°
5
49°
42°
6
54°
42°
7
53°
41°
8
58°
45°
9
55°
53°
10
63°
52°
11
60°
45°
12
61°
47°
13
66°
53°
14
73°
53°
15
70°
51°
16
71°
58°
17
67°
53°
18
68°
46°
19
64°
42°
20
66°
40°
21
60°
53°
22
69°
57°
23
69°
50°
24
72°
50°
25
59°
48°
26
62°
38°
27
62°
38°
28
64°
46°
29
66°
54°
30
69°
46°
1
63°
42°
2
67°
50°
3
70°
50°
4
73°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Terrace Bay
Terrace Bay's September 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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.