S
M
T
W
T
F
S
30
72°
51°
31
70°
50°
1
67°
46°
2
64°
46°
3
63°
52°
4
66°
58°
5
62°
52°
6
65°
50°
7
75°
50°
8
59°
39°
9
60°
37°
10
72°
53°
11
59°
50°
12
66°
44°
13
65°
45°
14
68°
51°
15
64°
43°
16
73°
50°
17
63°
46°
18
65°
49°
19
56°
38°
20
50°
34°
21
57°
43°
22
61°
37°
23
64°
35°
24
74°
43°
25
71°
42°
26
66°
45°
27
64°
42°
28
58°
48°
29
56°
47°
30
63°
48°
1
63°
50°
2
64°
46°
3
66°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Campbellton
Campbellton's September 2026 forecast shows daily high temperatures ranging from 56° to 74°, with overnight lows between 42° and 50°. The average high for September is 65° with an average low of 46°. 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 Campbellton. See also: October | November | December.