S
M
T
W
T
F
S
30
72°
54°
31
75°
49°
1
75°
46°
2
69°
45°
3
68°
50°
4
71°
55°
5
74°
53°
6
76°
46°
7
68°
48°
8
69°
51°
9
73°
53°
10
69°
53°
11
72°
52°
12
72°
52°
13
71°
50°
14
65°
44°
15
64°
43°
16
64°
42°
17
65°
50°
18
65°
47°
19
66°
51°
20
71°
50°
21
70°
45°
22
65°
41°
23
62°
43°
24
61°
41°
25
61°
41°
26
59°
40°
27
Hist. Avg.
66°
47°
28
Hist. Avg.
66°
47°
29
Hist. Avg.
65°
46°
30
Hist. Avg.
64°
46°
1
Hist. Avg.
64°
46°
2
Hist. Avg.
64°
45°
3
Hist. Avg.
63°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Montague
Montague's September 2026 forecast shows daily high temperatures ranging from 59° to 76°, with overnight lows between 40° and 55°. The average high for September is 68° 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 Montague. See also: October | November | December.