S
M
T
W
T
F
S
30
74°
50°
31
72°
46°
1
67°
48°
2
67°
46°
3
66°
45°
4
66°
46°
5
67°
46°
6
66°
47°
7
69°
51°
8
72°
52°
9
65°
45°
10
66°
49°
11
69°
51°
12
68°
49°
13
69°
50°
14
71°
48°
15
66°
44°
16
63°
44°
17
62°
43°
18
64°
49°
19
62°
44°
20
69°
48°
21
62°
46°
22
Hist. Avg.
64°
46°
23
Hist. Avg.
64°
46°
24
Hist. Avg.
63°
45°
25
Hist. Avg.
63°
45°
26
Hist. Avg.
63°
44°
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 Carleton Place
Carleton Place's September 2026 forecast shows daily high temperatures ranging from 62° to 74°, with overnight lows between 43° and 52°. The average high for September is 67° with an average low of 47°. 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 Carleton Place. See also: October | November | December.
