S
M
T
W
T
F
S
30
60°
43°
31
69°
42°
1
75°
55°
2
67°
49°
3
55°
46°
4
51°
46°
5
62°
53°
6
65°
30°
7
69°
32°
8
72°
41°
9
76°
43°
10
60°
36°
11
62°
30°
12
63°
34°
13
65°
28°
14
63°
31°
15
63°
37°
16
68°
29°
17
72°
28°
18
73°
31°
19
59°
36°
20
56°
33°
21
71°
42°
22
62°
40°
23
57°
33°
24
73°
42°
25
64°
45°
26
61°
48°
27
59°
47°
28
58°
47°
29
57°
46°
30
61°
47°
1
65°
45°
2
61°
44°
3
61°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Kouchibouguac National Park
Kouchibouguac National Park's September 2026 forecast shows daily high temperatures ranging from 57° to 73°, with overnight lows between 42° and 48°. The average high for September is 62° 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 Kouchibouguac National Park. See also: October | November | December.
