S
M
T
W
T
F
S
30
78°
57°
31
78°
50°
1
77°
48°
2
70°
47°
3
69°
52°
4
72°
57°
5
76°
53°
6
77°
47°
7
68°
48°
8
71°
51°
9
75°
54°
10
70°
54°
11
75°
53°
12
74°
54°
13
73°
52°
14
65°
45°
15
65°
44°
16
64°
44°
17
64°
52°
18
66°
44°
19
66°
53°
20
70°
51°
21
71°
44°
22
65°
42°
23
61°
41°
24
60°
40°
25
59°
39°
26
58°
42°
27
Hist. Avg.
62°
44°
28
Hist. Avg.
62°
44°
29
Hist. Avg.
61°
43°
30
Hist. Avg.
61°
43°
1
Hist. Avg.
61°
43°
2
Hist. Avg.
60°
42°
3
Hist. Avg.
60°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Centretown
Centretown's September 2026 forecast shows daily high temperatures ranging from 58° to 78°, with overnight lows between 39° and 57°. The average high for September is 69° with an average low of 49°. 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 Centretown. See also: October | November | December.