S
M
T
W
T
F
S
30
95°
53°
31
94°
51°
1
93°
48°
2
92°
49°
3
91°
48°
4
91°
52°
5
90°
49°
6
91°
51°
7
91°
51°
8
84°
49°
9
84°
48°
10
86°
47°
11
85°
43°
12
86°
42°
13
82°
43°
14
81°
42°
15
81°
42°
16
82°
43°
17
85°
45°
18
84°
44°
19
80°
46°
20
86°
48°
21
87°
43°
22
88°
43°
23
81°
41°
24
77°
41°
25
Hist. Avg.
78°
40°
26
Hist. Avg.
78°
40°
27
Hist. Avg.
78°
40°
28
Hist. Avg.
77°
40°
29
Hist. Avg.
77°
39°
30
Hist. Avg.
76°
39°
1
Hist. Avg.
76°
39°
2
Hist. Avg.
75°
39°
3
Hist. Avg.
75°
38°
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 77° to 95°, with overnight lows between 41° and 53°. The average high for September is 86° 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 Montague. See also: October | November | December.