S
M
T
W
T
F
S
30
74°
51°
31
72°
48°
1
77°
46°
2
71°
53°
3
77°
59°
4
74°
56°
5
69°
54°
6
69°
49°
7
75°
43°
8
70°
42°
9
67°
41°
10
71°
49°
11
63°
43°
12
74°
40°
13
76°
56°
14
64°
40°
15
69°
36°
16
72°
53°
17
74°
50°
18
65°
40°
19
62°
35°
20
54°
39°
21
58°
39°
22
N/A
23
67°
34°
24
67°
41°
25
71°
44°
26
65°
48°
27
62°
50°
28
58°
49°
29
60°
50°
30
66°
52°
1
67°
51°
2
65°
48°
3
64°
46°
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 58° to 71°, with overnight lows between 41° and 52°. The average high for September is 65° with an average low of 48°. 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.
