S
M
T
W
T
F
S
30
65°
52°
31
67°
53°
1
69°
49°
2
73°
46°
3
67°
45°
4
71°
45°
5
72°
50°
6
72°
52°
7
73°
51°
8
69°
50°
9
70°
51°
10
73°
50°
11
72°
50°
12
73°
49°
13
71°
51°
14
72°
50°
15
72°
45°
16
71°
39°
17
61°
43°
18
62°
49°
19
66°
48°
20
70°
49°
21
68°
44°
22
68°
39°
23
60°
36°
24
Hist. Avg.
61°
38°
25
Hist. Avg.
60°
38°
26
Hist. Avg.
60°
37°
27
Hist. Avg.
60°
37°
28
Hist. Avg.
59°
37°
29
Hist. Avg.
59°
37°
30
Hist. Avg.
58°
36°
1
Hist. Avg.
58°
36°
2
Hist. Avg.
58°
36°
3
Hist. Avg.
57°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Coaticook
Coaticook's September 2026 forecast shows daily high temperatures ranging from 60° to 73°, with overnight lows between 36° and 53°. The average high for September is 69° 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 Coaticook. See also: October | November | December.
