S
M
T
W
T
F
S
30
75°
52°
31
70°
49°
1
70°
53°
2
70°
55°
3
72°
51°
4
74°
54°
5
71°
49°
6
66°
53°
7
73°
52°
8
71°
51°
9
72°
52°
10
72°
52°
11
67°
49°
12
68°
51°
13
72°
52°
14
72°
51°
15
71°
50°
16
70°
50°
17
70°
49°
18
69°
48°
19
65°
46°
20
63°
49°
21
65°
46°
22
61°
44°
23
67°
46°
24
68°
47°
25
62°
44°
26
63°
46°
27
66°
46°
28
66°
47°
29
65°
47°
30
67°
46°
1
67°
46°
2
62°
45°
3
64°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Miramichi
Miramichi's September 2026 forecast shows daily high temperatures ranging from 61° to 75°, with overnight lows between 44° and 55°. The average high for September is 68° 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 Miramichi. See also: October | November | December.
